The upgrade of my test instance via the web updater from 27.1.3 failed with this information:
Exception: Database error when running migration 28000Date20230906104802 for app core Index name "ts_session" for table "oc_talk_sessions" collides with the constraint on table "oc_text_steps".
Detaillierte Protokollmeldungen
Update vorbereiten
Log-Level auf "debug" gesetzt
Wartungsmodus eingeschaltet
Reparaturschritt: Repair MySQL collation
Reparaturinformation: All tables already have the correct collation -> nothing to do
Reparaturschritt: Copy data from accounts table when migrating from ownCloud
Reparaturschritt: Drop account terms table when migrating from ownCloud
Das Datenbankschema wird aktualisiert
Exception: Database error when running migration 28000Date20230906104802 for app core Index name "ts_session" for table "oc_talk_sessions" collides with the constraint on table "oc_text_steps".
Das Update ist fehlgeschlagen. Bitte melde dieses Problem an die Nextcloud Community.
What can I do more for diagnosis?