Unable to update core 18 snap has no updates available ubuntu

Unable to update core 18 snap has no updates available ubuntu. Click it, and select "Quit". 04, it’s important to understand the context and mechanisms behind Snap package updates. View details of updates; In this menu, you can select or deselect the individual packages you wish to update (or not). Updating the system repository will update the repository index and fetch information about the latest packages available for your system. Removing snapd Daemon. 04 LTS. – We recommend an ubuntu installed distribution to develop and test for this repository, with atleast the following installed and available. It will show the information about running snap apps. Since a few days, I can no longer install app from the snap store. Wait few minutes for Handling re-refresh of "snap-store" as needed. @heynnema : The results of sudo apt upgrade: 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 04, and with the news of new Firefox that was released earlier this week, I was wanting to upgrade to the latest. Mar 5, 2021 · UPDATE: I'm not sure where I'm supposed to be making updates, but I'll do it here for now. New features for this release include: Previous updates to Ubuntu Core have Nov 15, 2022 · One of the core aspects of the snap ecosystem is the built-in, robust auto-update mechanism. Oct 2, 2019 · $ sudo snap install hello-world [sudo] password for zany130: hello-world 6. 5 8268 stable canonical core. Enable snaps on Ubuntu and install wine-platform-runtime. sudo snap refresh core20 --channel=stable. elementary OS. Most of the time, this works great. $ cd ~/mysnaps/hello. timer=sat,23:00~23:59,,sun,23:00~23:59. Upgrade from Ubuntu 20. So I went to the Terminal, to see if I could refresh there. I just noticed after issuing snap list command that my list of installed snaps includes cups, version 2. The problem has disappeared on its own. In order to update snap core/apps via terminal, you go with: snap refresh. Users received a daily pop-up counting down to the automatic refresh of the snap. KDE Neon. Kubuntu. go:413: cannot refresh: has apparently been getting logged for awhile however I just seemed to notice Updating software. open synaptic app and find the list of obsolete packages by clicking on the “Status” button and selecting “Installed (local or obsolete)”. But updateing always fails with message: "update: Operation failed (Code: 400)! Message: snap has no updates available, Kind: snap-no-update-available". 42. My question is the following: How do I authenticate so that I can continue with the update? Apr 27, 2020 · sudo apt-get install gir1. Then kill them. I am running version 20210611. snap update is now refresh. snap refresh --time. Also you need to run sudo apt-get function for updating, upgrading and downloading other I initially Checked for Updates which was successful. Have an UbuntuCore 18 image where the core18 snap is used as root filesystem (similar to Choose your Linux distribution to get detailed installation instructions. One of them, selected with the model assertion, also serves as the root file system for the Ubuntu Core system. timer=01:00-02:00. Before beginning the release upgrade, it’s safest to update to the latest versions of all packages for the current release. 04). snapとはubuntuで使われているソフトウェア管理プログラムであり、snap-storeはそれのGUI操作プログラムです。. Dec 2, 2020 · Seems like a lot of people may be affected by this issue. refresh. The only way to update Firefox was to do a force upgrade. In some scenarios, though, this may not be what the user wants or expects. 48 10444 latest/stable canonical core core18 20200929 1932 latest/stable canonical base gnome-3-26-1604 3. One way: On the command line, run snap-store --quit. When I execute. That's all :) Share. If yours is not shown, get more details on the installing snapd documentation. Oct 14, 2023 · From 23. xz On boot I entered the configuration, and account information. Now I wait for update re App Center. Directory /snap/cups was updated a few days ago: drwxr-xr-x 11 root root 159 Oct 22 07:21 836. 通信の確認. NET Core SDK. snapcraft. 10-1ubuntu2 In case that is not an option you could try to install the debian install file from 19. In the terminal, you have to use the following command: Jan 27, 2024 · Upgraded my Noble to Kernel: 6. Ubuntu Core enables our customers to build highly secure, stable IoT solutions that deliver the Oct 26, 2022 · Stack Exchange Network. 04 LTS (Jammy Jellyfish). 04LTS) (admin): Firmware update daemon 1. Arch Linux. 20200529 100 latest/stable/… Step 1: Update the system repository. 24. Apr 27, 2024 · Enable snaps on Ubuntu and install Core 18. If you are having issues with a Snap, especially for the core/foundation Snap app's, there is a way to force a reinstall of Snap core20 (Without having to remove/install. You get to choose when to terminate the application and run the refresh. Apr 25, 2022 · Step 2 – Updating Currently Installed Packages. You can start using Ubuntu Core 22 Beta if you’re interested in testing the new features of the upcoming GA release. 04 is to be installed ubuntu-core-launcher : Depends: snapd (= 2. I though with snap it would be self updating? Thanks. I tried running sudo snap refresh but I kept getting the message that all snaps were up-to-date. After trying to update, I got the following message: Unable to Install Available Updates unsuccessful. After you set the schedule window, you can check what the system reports: snap refresh --time timer: 01:00-02:00 last: today at 12:38 PST next: tomorrow at 01:00 PST. retain is available in snap 2. 04 binaries. However, my notebook (Core i7 3537U and GT 740M) received the update yesterday and snaps are working. corrado@corrado-n9-nn-1210:~$ snap run snap-store snap-update-ns killed by signal Aug 8, 2020 · Hello I think I have the same problem as in: Snapd. error: cannot refresh "snap-store": snap "snap-store". After asking this question I found a solution. Feb 24, 2023 · I am trying to update the "core18" Snap package on several ctrlxCore devices. metered=hold. Feb 19, 2024 · When encountering the message “Snap has no updates available” on Ubuntu 22. Both, DeviceAdmin and DevicePortal offer me to update to 20230207. Feb 12, 2019 · Do sudo apt update and then sudo apt upgrade. core 16-2. It will fully close the Snap Store and you will be able to update it using “sudo snap refresh snap-store”. Try updating the core snap: sudo snap refresh core If core is already installed the following message will be shown: snap "core" has no updates available Your results of running sudo snap refresh core were as follows: Sep 16, 2020 · This problem shows up sometimes if multiple updates are listed and updated in one go. I´ve had the same issue as other people updating the Snap Store (just as this topic explains: Unable to update "Snap Store": (null): cannot refresh "snap-store": snap "snap-store" has running apps (ubuntu-software) in Ubuntu 22. Once the system has made its reboot, snap gui did not show any state of progress. To update the system repository, all you have to do is execute the simple command: sudo apt update. Make sure all available updates are installed. Ubuntu asked to reboot while snap was installing two packages. sudo yum install epel-releasesudo yum install yum-plugin-coprThen add the re ubuntu中 snap 包的安装、更新删除与简单使用. Dec 10, 2018 · Method 1: Update Ubuntu via the Command Line. It’s the next generation of Ubuntu for embedded devices, and builds on the advances we’ve made in both Ubuntu Core 20 and Ubuntu Core 18. This topic was automatically closed 90 days after the last reply. timer: 01:00-02:00. To dismiss this notification, users would need to run snap refresh firefox from the command line or visit Ubuntu Jan 31, 2019 · Stack Exchange Network. 04でsnap-storeの更新が通知されたので実行しようとしたところ、下記のエラーで更新できませんでした。. Run sudo snap refresh. If the previous steps did not help, you go through the below steps: 1) Open the Terminal with Ctrl + Alt + T. Tried: UPDATE: I'm not sure where I'm supposed to be making updates, but I'll do it here for now. sudo killall snap-store sudo snap refresh killall snap-store forces reloading of the software catalog and that seems to fix the mixed up metadata. Warning: Stopping snapd. 26. This release builds on established strengths for Ubuntu Core, consolidating its reliable and secure nature and introducing new features. Reinstall Livepatch with snap install canonical-livepatch as root (if you removed it earlier) Either grab your key from Dec 1, 2019 · Ubuntu Core 18 has snap built in, when trying to install it I get the following error: $ sudo snap install microk8s error: snap "microk8s" requires classic confinement which is only available on classic systems Aug 19, 2023 · Re: Unable to update core20. 6-2ubuntu1 eoan (19. Base snaps mirror Ubuntu LTS releases and include core20, built from Ubuntu 20. Just don't let the 14-day countdown timer Mar 27, 2023 · When you click the Update button a notification pops up that says Unable to update core: snap has no updates available as shown in the screenshot, even though the results of snap list show that the core16 snapd-runtime environment is not installed. Apr 17, 2023 · While it’s good to know when a new update to Firefox is available, our previous messaging was generally regarded as heavy handed and hard to action. bash. On a terminal run: snap changes Find the process that is causing the issue and note the ID of the process in the ID field. The output that I am getting is as follows : error: cannot perform the following tasks: - Download snap "core" (11316) from channel "latest/stable" (invalid credentials) Nov 13, 2019 · 0. For more details regarding a package update, highlight the package in question and click on “Technical description. Next, upgrade installed packages to their latest available versions: Jun 6, 2018 · Thanks ogra, I understand that there are no updates for the snaps I have installed, the message is very easy to understand, for instance, snap “hello-world”: snap has no updates available. 1. I get the following error: error: cannot perform the following tasks: - Download snap "core" (8268) from channel "stable" (invalid credentials) - Download snap "core18" (1668) from channel "stable" (invalid credentials) The following is the snap logfile: Jan 23 10:53:56 pc-ici17 dbus-daemon[2821]: apparmor="DENIED" operation="dbus_bind" bus="session" name Apr 17, 2023 · While it’s good to know when a new update to Firefox is available, our previous messaging was generally regarded as heavy handed and hard to action. Improve this answer. My snaps stopped working immediately after the update on my desktop. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'snapd' has no installation candidate My system specs: What should I do? Ps. . I tried: sudo apt-get purge snapd sudo apt-get install snapd didn't work. corrado@corrado-n9-nn-1210:~$ snap run firefox snap-update-ns killed by signal 11 corrado@corrado-n9-nn-1210:~$ sudo snap refresh [sudo] password for corrado: All snaps up to date. If you try to run a manual snap update while it’s running (and you’re using the awareness feature), you will see a message like below: snap refresh okular --candidate error: cannot refresh "okular": snap "okular" has running apps (okular) Jan 1, 2019 · My proxy environment variables weren't enough. Jul 24, 2023 · Package snapd is not available, but is referred to by another package. Jan 31, 2020 · I cannot refresh my snap on ubuntu 18. On selecting Update All a message appears Unable to Install Updates: snap has no updates available. publisher: Canonical . First, open the terminal in Ubuntu desktop. summary: snapd runtime environment. service. sudo snap refresh All snaps up to date. Dec 17, 2022 · Closing the window is not enough to terminate the application. A) You can set snap to not refresh on metered-connections. I'm running Ubuntu 20. 04 LTS system is up to date. Sep 16, 2022 · To fully close it, just open it, do click in the “Ubuntu Software” text in the left part of the top bar (if your language isn’t English, it will be translated), and choose “Quit” (also translated). After you set the schedule window, you can check what the system reports: snap refresh --time. )) Do not forget to install the ubuntu-desktop if it is not in the package text file sudo apt-get install ubuntu-desktop (Not required) 4- update your grub , run : sudo update-grub2. Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions. Another way: Open Ubuntu Software, look at the top bar, find "Ubuntu Software" on the left side of the top bar. It happens after the last kernel update (going to 5. Not only that but core16 does not have a stable channel, only beta and edge candidates, so I Feb 9, 2021 · I had the same issue on the same version of Ubuntu. Ubuntu Core 22 (UC22) is the latest Ubuntu Core release, and is built on the foundations of Ubuntu 22. sudo apt-get install skypeforlinux. lrwxrwxrwx 1 root root 3 Nov 1 19:38 current -> 836. 8. Snaps in Ubuntu Core update automatically, and by default, the snapd daemon checks for updates 4 times a day. Noticed my version was stuck on 116. 10 fresh installation I got App Center icon showing only empty white page. Each update check is called a refresh . service, but it can still be activated by: snapd. If sometimes the date is incorrectly set by the automatic date and time function then this issue may occur, which occurred to me a while back. You can wait blindly 'till the end, or abort the Apr 10, 2023 · linux 安装 snap 7,centOS7安装 snap ，解决 snap: command not found. (ubuntu-software), pids: 2247. error: cannot refresh "snap-store": snap "snap-store" has running apps. Apr 25, 2022 · ubuntu unable to update snap has no updates availableUbuntu users who use 20. 0. I get following error: Fehler: cannot perform the following tasks: - Den Konfigurationshook von Snap "snap-store" ausführen, falls vorhanden (run hook "configure": <exceeded maximum runtime of 5m0s>) Oct 30, 2020 · The Snap Store is not launching in Ubuntu 20. Feb 16, 2020 · Name Version Rev Tracking Publisher Notes. ここでは 3471 )が分かるので，. Whenever there is a snap update available in the Snap Store, the snapd service will apply it, keeping your software patched and up to date. The first thing to do is to create a general snaps directory followed by a working directory for this specific snap project: $ mkdir -p ~/mysnaps/hello. Dec 14, 2022 · Snap developers did, in fact, intend this behavior beginning in 22. Jul 2, 2021 · Now I am trying to update my snaps by running : $ sudo snap refresh But the problem is, it is not being updated although I have a stable internet connection. 4 LTS or later can use:killall snap-storeor killall gnome-softwareHow do I up Dec 20, 2022 · Ubuntu store snap update fails. Mar 24, 2023 · Killall via command line. 04 because the alternatives were much worse: Either terminate the application to update (looks like a crash to the user), or don't update at all (security risk). 7. 5- finally reboot your pc. 04 LTS Jul 15, 2019 · opendistro-alerting : Depends: elasticsearch-oss (= 7. Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. 34 and later. io. 88 1421 latest/stable canonical - core 16-2. 04 でsnap (というパッケージ管理ツール) が動かなくなった時の作業メモ. 0-24 Ubuntu Core 18 RPi I installed: ubuntu-core-18-armhf+raspi3. I've Ubuntu 22. retain=3 on Ubuntu Core systems and refresh. Hi there, in the software center it keeps telling me that I have updates but if I click on "update all" this is what I get. ログの確認. You can try to abort the snap process that seems to be hung. It retrieved from the sever, my account. * Software older than 1 year is in fact ancient. I placed this old icon into my dock and removed App Center icon from the dock to Applications. 04. Oddly enough, (after setting the proxy settings for snap) if I did a snap refresh snapd it reported that snapd wasn't installed, when it actually was. The suggestions given in the answers to this question generally solve the problem. Regardless of when a refresh is scheduled, an update refresh can be initiated with the snap refresh command: Aug 31, 2020 · Run the command rm /etc/machine-id as root to remove your current machine ID (if it says the file or directory doesn't exist, you can safely ignore it) Run the command systemd-machine-id-setup as root to regenerate the ID. 04 LTS, core18 based on Ubuntu 18. Authentication required. If the problem persists, try to restart service: sudo systemctl restart snapd. updates Dec 9, 2020 · $ chromium-browser cannot locate base snap core18: No such file or directory $ snap list Name Version Rev Tracking Publisher Notes chromium 87. This also didn't work snap-storeはコマンドで更新できる. Should a software update be available within this interval, connected devices update automatically, meaning software is always secure. 04) but 2. sudo snap refresh snap-store. 4280. Not only that but core16 does not have a stable channel, only beta and edge candidates, so I Apr 1, 2021 · The key point seems to be that there was a snap change conflict because there was already an “auto refresh change in progress”. New features for this release include: Previous updates to Ubuntu Core have Jul 12, 2020 · The following information may help to resolve the situation: The following packages have unmet dependencies: snap-confine : Depends: snapd (= 2. has running apps (ubuntu-software), pids: 3471. 4 from Canonical installed hello-world cannot locate base snap core: No such file or directory So no snaps are working on my Ubuntu machine. I temporarily removed elasticsearch-oss and the opendistro- packages, and then do-release-upgrade worked as expected. With the snap changes cmd, you see that the state is "Doing" for the package that is installing. If this is still not possible there is yet another approach. After this, open your snap store (or "Ubuntu Software") again and you will see it's updated. snap refresh skype. service delays startup in Ubuntu 18. snap 8. 04 with 4. Jun 17, 2023 · sudo snap refresh. 0-31-generic). Debian. See the date and time section, type date on the terminal, it will give you the date set by your computer. The exact message I got is: "Impossibile aggiornare core 22: snap has no updates available", because it's in Italian, so I don't know exaclty which is the message in English. and run again same command: kill 2247. You can find it in the menu, or use the Ctrl+Alt+T keyboard shortcut. This will help to keep the gap between packages as small as possible. Jul 9, 2020 · For instance, you may want to set your snap updates only to run overnight, between 01:00 and 02:00 (in the 24h format). If you are logged on to an Ubuntu server, you already have access to a terminal. 1 I was running constantly with an issue with the snap-store unable to refrsh, so I followed instructions to kill and refresh the store from the command line. sudo snap set system refresh. sudo apt-get install snapd. This snap wasn't previously there last time I checked. However after applying the commands which effectively removed snap-store I then get a message indicating an application update to core 16 the snapd runtime environment. I am a bit confused whether I have to do anything. I also tried installing a snap through the Software Center, again it would install but not run. 04 packages. 15. sudo snap install snap-store. 2) Copy, Paste, and run the below commands: sudo killall snap-store. Apr 22, 2022 · So, to begin, ensure that your current Ubuntu 20. 678417 storehelpers. After trying to update and refresh snap I received icon of old Ubuntu Software showing available new packages. B) You can tell snap to only update at specific times. 4. Add a Comment. Starting the project. However, the upgrade worked and it connected properly to api. and I try with Ubuntu Software again and can't update it. Execute the below commands: sudo apt update sudo apt upgrade sudo apt dist-upgrade. 1) but 6. ubuntu22. CentOS. I've tried "sudo apt update && sudo apt upgrade", which worked correctly but did not change the situation. EDIT: minor edit. * PASS. Unable to update "Core 18": snap has no updates available" It's already installed as I check with the terminal: sudo snap install core18 snap "core18" is already installed, see 'snap help refresh' I also try snap refresh. 2. 04 LTS, and core, based on Ubuntu 16. 10) (admin): Firmware update daemon 1. Ubuntu 20. 10 either manually through dpkg or the software center and then pick all the dependencies needed as instructed during the attempt to Ubuntu Software shows me an update is available, core 16 snapd runtime environment, after I press Update, I get the following error: Unable to update core: (null): cannot refresh "core": unexpectedly empty response from the server (try again later) In terminal apt update shows no pending updates. Enable snaps on Ubuntu and install core20. ago. retain=2 on classic Ubuntu systems, such as those running an Ubuntu LTS release. Jun 2, 2022 · First: sudo killall snap-store. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. contact: snaps@canonical. Report back to @heynnema. Begin by updating the package list: sudo apt update. 04 LTS) on 22. ” Sep 20, 2022 · 1 sudo snap refresh snap-store. Some of them Jan 22, 2019 · Canonical today published Ubuntu Core 18, bringing the popular Ubuntu 18. $ snap refresh core. socket. 04 is to be installed E: Unable to correct problems, you have held broken packages. It responded that there were 123 Updates. 17 Likes. Mar 4, 2021 · 1. 04 installation. They update automatically and roll back gracefully. If an update is available for any package, it will show you the May 13, 2022 · Ubuntu Core, the Ubuntu flavour optimised for IoT and edge devices, has now available a Beta version for the new UC22 release. 2-4. Packages: git, snap, qemu-kvm; Snaps: snapcraft, ubuntu-image, golang (For a SBC like RPi) you will need UART TTL serial debug cable (Because you will not have SSH in initrd) Jan 17, 2020 · bionic (18. name: core. Next, let’s stop, disable, remove, and hold the snapd daemon: $ sudo systemctl stop snapd. May 30, 2022 · sudo snap refresh snap-store. 04 Thanks for any suggestion Jul 10, 2020 · But, I am unable to do software updates 1) either from terminal (sudo apt-get update) or 2)by using GUI software update option available in Ubuntu 18. snapが動いているなら、以下のメッセージの後HTTPエラー等になるはず. Then: sudo snap refresh snap-store. 04, and got it solved following the steps provided by other users: uninstalling and reinstalling Snap Store via terminal. 1+18. However, some projects can benefit from holding a deployed snap, or a set of snaps, at a tested revision until any new release is separately validated, and this Dec 20, 2023 · Hello, I am on Kubuntu 22. を実行すると，. :~$ snap-store 10:12:29:0421 Gtk Failed to load module "canberra-gtk-module" 10:12:29:0423 Gtk Failed to load module "canberra-gtk-module" 10:12:29:0471 Gs enabled plugins: desktop-categories, fwupd, os-release, packagekit, packagekit-local, packagekit-offline, packagekit-proxy, packagekit-refine Jan 4, 2022 · As suggested in comment, purge and reinstall snapd to fix this: sudo apt-get purge snapd. Fedora. Then run: sudo snap abort xx where xx is the ID of the process. The entry - 2018/06/06 15:32:17. com. Dec 19, 2022 · Running 22. 0-060800rc1-generic but firefox snap does not start, rebooting with old kernel firefox works again. 1 is to be installed E: Unable to correct problems, you have held broken packages. and then try the update step again. snap "core" has no updates available. Apr 25, 2022 · Optionally, you can click on “Details of updates” to get an itemized list of what Ubuntu plans to update. Jan 18, 2017 · When the hello snap is installed, the core snap is installed along with it if core is not already installed. replace 2247 with whatever you see after pids: Jul 17, 2020 · 確認手順. May 12, 2020 · Steps: install synaptic with “sudo apt-get install synaptic”. 1. By default, devices connected to an App Store can check for updates every six hours. The next boot, I noticed: Aug 08 17:50:35 localhost systemd[1]: Starting Wait until snapd is fully seeded… Aug 08 17:50 Jul 9, 2020 · To that end, you can use refresh awareness to make sure the application will not be updated while running. The default is refresh. I got an “Download snap “core” (10908) from channel “latest/stable” (invalid credentials” response. 以下なら問題なし. 2. Once the core18 snap is out of experimental stage you will be able to: Define something like “base: core18” in your snapcraft. Apr 9, 2024 · Enable snaps on Ubuntu and install . Step 1: Install the COPR plugin and EPELKick off the installation by addingepelrepository and installingcopryum plugin. ) Code: sudo snap refresh core20 --channel=edge. 04 LTS to high-security embedded devices. 04 LTS to Ubuntu 22. I have also tried by going to Icon "software & updates" -> "Ubuntu Software" tab and selecting download from "main server" option. updates Mar 27, 2023 · When you click the Update button a notification pops up that says Unable to update core: snap has no updates available as shown in the screenshot, even though the results of snap list show that the core16 snapd-runtime environment is not installed. Then retry Software Center. 3. select all of the obsolete packages and mark them for removal, then click on Apply button. It is from within this hello directory where we will invoke all subsequent commands. “Dell has been working closely with Canonical over the past three years to certify Ubuntu Core on all our Edge Gateway platforms. yaml so that your snap builds and runs in the context of 18. If you have installed Skype deb package downloaded from their official website, then run. This update frequency can be modified to schedule updates at a time convenient to the user of the device Jul 2, 2018 · Same thing occured on my fresh 20. 1 sudo kill 3471 2 sudo snap refresh. To dismiss this notification, users would need to run snap refresh firefox from the command line or visit Ubuntu Apr 27, 2018 · The current core snap is built from 16. Mar 18, 2024 · If there were any snaps left, we could go back to listing them, and try to remove them with snap remove. Manual updates. Be sure to update your packages regularly, either by unattended upgrades, or by running: sudo apt-get update && sudo apt-get upgrade. Refresh control in Ubuntu Core. 45. 2-gnomebluetooth-1. Mar 6, 2023 · $ sudo snap install flameshot error: cannot perform the following tasks: - Ensure prerequisites for " flameshot " are available (cannot install prerequisite " kde-frameworks-5-91-qt-5-15-3-core20 ": no snap revision available as specified) Sep 15, 2022 · Hello! I’m unable to install the snap-store on my Ubuntu (22. By following the troubleshooting steps and best practices outlined in this article, users can ensure their Snap packages remain up-to-date and secure. It is showing Network is unavailable. Apr 4, 2019 · There's no option for a single snap, only for all snaps. $ snap info core. New replies are no longer allowed. でOK。. のようなエラーが出てアップデートを妨げているpid (プロセスID。. I later found this is a known bug that has been out there for a few years. [deleted] • 2 yr. If you have installed the Skype snap package, you can update it by running the following command in Terminal. img. For historical reasons the core snap has a different specific type: core. error: cannot perform the following tasks: - Fetch and check assertions for snap "core20" (1891) (cannot verify snap "core20", no matching signatures found) Ubuntu 20. yk gf bm pk pu jz jt au il wo