• Put the app in recovery mode - https://docs.cloudron.io/apps/#recovery-mode . this makes the filesystem writable
• In one web terminal, just run /app/pkg/start.sh . this runs the app and creates paths
• In another web terminal, try running the second command and check if that /app/code/wallabag/wallabag-export.json was created ... if it was you Download it using the Download button in web terminal ? or copy it to /app/data and use file manager .

Here is what I did in app terminal

root@e8910a15-341c-4afb-bea1-4feeb79a6ae5:/app/code/wallabag/bin# /app/code/bin/console wallabag:export wallabag --env=prod > /app/data/foo.json
bash: /app/code/bin/console: No such file or directory
root@e8910a15-341c-4afb-bea1-4feeb79a6ae5:/app/code/wallabag/bin# ./console wallabag:export wallabag --env=prod > /app/data/foo.json
PHP Warning:  file_put_contents(/app/code/wallabag/wallabag-export.json): failed to open stream: Read-only file system in /app/code/wallabag/src/Wallabag/CoreBundle/Command/ExportCommand.php on line 64
root@e8910a15-341c-4afb-bea1-4feeb79a6ae5:/app/code/wallabag/bin# 

How should that github command be changed to work in the cloudron, either from app terminal or SSH login on the cloudron server?

Wallabag has serveral export options, json, epub, text, csv etc etc, all giving 500 error.

This is the only related entry in the logs when I click on "Export"....and example try to export JSON (It is the same whatever export option I choose):

May 05 14:50:12 172.18.0.1 - - [05/May/2025:12:50:10 +0000] "GET /export/unread.json?search_entry%5Bterm%5D= HTTP/1.1" 500 4818 "https://bag.xxxxxxxx.xxxx" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:137.0) Gecko/20100101 Firefox/137.0"

And this error message shows up in wallabag:

It seems the app was re-published , meaning there is no update to the new version. You have to install a new wallabag and manually migrate from old wallabag to the new one . In the post you linked it says "Wallabag has an export and import feature, which needs to be used to transition to the new app version now. Hopefully in the future the data migration works better with new releases." . So, export from your existing wallabag and import into new install wallabag . I recommend keeping the old wallabag around until the import works...

Here is the reason the manual update does not work

Back in the day I did not do what you suggested here https://forum.cloudron.io/post/23720 as I was not aware then of the need to manually update.

So my wallabag version just stayed at version 2.4.1

Now, if I try to manually update, I can't, as there is no update button. There is only the "Check for update" button, and when I click on it the circular arrows rotate, but nothing comes of it. And the logs shows nothing.

But now I am stuck. Any idea what I can do?