Drupal - website repair

I am looking for a person who will undertake to fix my client's site based on Drupal engine locked in docker.

The problem arose when the dedicated MariaDB database on the hosting ran out of space.

The error that is displayed in the browser

The website encountered an unexpected error. Please try again later. + 503 when calling the admin panel /login/user

From the cli level

In StatementWrapper.php line 145:

SQLSTATE[42000]: Syntax error or access violation: 1142 INSERT command denied to user 'user_drupal'@'85.128.143.9' for table `user_drupal`.`d9_watchdog`.

$ composer self-update

Upgrading to version 2.8.2 (stable channel).

In SelfUpdateCommand.php line 490:

Filesystem exception:

Composer update failed: “/usr/local/bin/composer” could not be written.

rename(/usr/local/bin/composer): failed to open stream: Permission denied