Unable to complete request

NC 17 changed the stable mode to beta, and upgraded to NC 18. Not finished, error message. I reinstalled NC 17 with this error in the passwords app. Sorry using translator.
It looks like a problem in the database.

Check the Nextcloud Error log for more information.
Maybe try to run ./occ maintenance:repair from the command line.

Perfect! Command ./occ maintenance: repair . Thanks!