Error: Exception: App with id files_antivirus has invalid signature

[Gabriel H. Nunes]

Hi,

I'm currently unable to update the files_antivirus app from version 3.1.0 to 3.1.1. According to my Nextcloud instance, the new version has an invalid signature. The same issue is currently happening with the guests app.

Server configuration

Operating system: Debian 10

Web server: Apache 2

Database: MySQL 19.0.3.1

PHP version: 7.3

Nextcloud version: 20.0.4

Where did you install Nextcloud from: Website tarball.

Client configuration

Browser: Firefox 84.0

Operating system: Linux Mint 20

Logs

Nextcloud log (data/owncloud.log)

{"reqId":"zsPMu3HIEj0QYEr5J9VJ","level":3,"time":"2020-12-22T10:37:23+00:00","remoteAddr":"***sensitive parameters replaced***","user":"***sensitive parameters replaced***","app":"core","method":"GET","url":"/settings/apps/update/files_antivirus","message":{"Exception":"Exception","Message":"App with id files_antivirus has invalid signature","Code":0,"Trace":[{"file":"/***sensitive parameters replaced***/nextcloud/lib/private/Installer.php","line":198,"function":"downloadApp","class":"OC\\Installer","type":"->","args":["***sensitive parameter replaced***",false]},{"file":"/***sensitive parameters replaced***/nextcloud/apps/settings/lib/Controller/AppSettingsController.php","line":532,"function":"updateAppstoreApp","class":"OC\\Installer","type":"->","args":["***sensitive parameters replaced***"]},{"file":"/***sensitive parameters replaced***/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":169,"function":"updateApp","class":"OCA\\Settings\\Controller\\AppSettingsController","type":"->","args":["***sensitive parameters replaced***"]},{"file":"/***sensitive parameters replaced***/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":100,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Settings\\Controller\\AppSettingsController"},"updateApp"]},{"file":"/***sensitive parameters replaced***/nextcloud/lib/private/AppFramework/App.php","line":152,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Settings\\Controller\\AppSettingsController"},"updateApp"]},{"file":"/***sensitive parameters replaced***/nextcloud/lib/private/Route/Router.php","line":308,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Settings\\Controller\\AppSettingsController","updateApp",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"action":null,"appId":"***sensitive parameter replaced***","_route":"settings.AppSettings.updateApp"}]},{"file":"/***sensitive parameters replaced***/nextcloud/lib/base.php","line":1008,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/settings/apps/update/files_antivirus"]},{"file":"/***sensitive parameters replaced***/nextcloud/index.php","line":37,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/***sensitive parameters replaced***/nextcloud/lib/private/Installer.php","Line":367,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0","version":"20.0.4.0","id":"***sensitive parameters replaced***"}

Thank you!

[Gabriel H. Nunes]

As pointed out here in the Nextcloud Help community, this issue is somehow related to presence of the External Storage: OneDrive app. Removing it solves the app update problem.