It looks like the app cannot connect to the database.
Have you changed your DB credentials? If so, edit /usr/local/open-audit/app/Config/Database.json
If not, are you running PHP between 7.4 and 8.2?
"Access denied for user"...
After you created your db user account, did you grant access to your DB to the user?
If no, see give the user access to the database here: How To Install or Upgrade Open-AudIT (Linux)
Yes of course i did not used default credentials so i changed them after installed open-audit the first time.
After upgrading from 4.4.2 to 5.0.1 on debian 12 i got "We seem to have hit a snag" message on the UI and the following errors in the log: