NextCloud - Internal Error

[externa1]

did you run univention-app update-certificates on the ucs server to renew the app certificate after renewing the ucs root cert ?

see:

Renewing the SSL certificates

Communication between the different systems in a UCS domain is largely SSL encrypted. A root certificate and host certificate for each computer are required for the SSL encryption. The root certificate is only valid for a specified period of time, as are the host certificates created with the root certificate. Once this period of time elapses, services which encrypt their communication with SSL (e.g., LDAP) no longer function. It is thus essential to verify the validity of the certificates and c…