On one of our NextCloud instances with 32 users we're seeing an issue where User Accounts work for login, but when we go to access a list of users in Contacts or in NextCloud Talk it finds no users at all. The message says "No contacts found".
If I run occ user:report I see a report stating that there are 32 user accounts. If I run occ user:report it lists all the users successfully. If I add a test contact manually using the Contact App that contact does show up in search, but no existing NextCloud users do.
Is there a way to check the database? Is there a way to repair or reset it? I've tried occ maintenance:repair to no avail.
Other Nextcloud test instances are working fine.
I found the following online, but looks like Cloudron uses PGSQL rather than MySQL. https://help.nextcloud.com/t/sharing-cant-find-any-contacts/13201