Some files have not passed the integrity check. Further information on how to resolve this issue can be found in the documentation
List of invalid files…
Technical information
The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.
Results
core
EXCEPTION
UnexpectedValueException
RecursiveDirectoryIterator::__construct(/var/www/html/db/nextcloud): failed to open dir: Permission denied