Can't use all storage, uploads cut to 10MB

For the cron problem I found a log and a case:
Failed to connect to the database: An exception occurred in the driver: could not find driver

Exception thrown: Doctrine\DBAL\Exception

It looks not like they found a solution!

i have changed also in the nextcloud config ghost from localhost to 127.0.0.1 and restarted nextcloud but it weren’t helping to solve the issue!