Nextcloud admin page error to creating admin user

I am facing error during making admin user @ first login:

Error while trying to create admin user: Failed to connect to the database: An exception occurred in driver: SQLSTATE[HY000] [1045] Access denied for user ‘dbadmin’@‘localhost’ (using password: YES)


Maybe this will help…

the database credentials are in text files in the root directory of the jail. To access from the UI go to the Jails from the sidebar, then click the 3 vertical dots to the right of your Nextcloud jail to open the menu, then select “Shell”.

the database credentials are ok i take from " Post Install Notes" but not working. " Post Install Notes"

I have got exactly the same issue. Please help