Additional uncaught exception thrown while handling exception.

Original

PDOException: SQLSTATE[HY000] [2002] Connection refused in _registry_check_code() (line 3499 of /var/www/vhosts/xn--pflegegte-w9a.de/httpdocs/includes/bootstrap.inc).

Additional

PDOException: SQLSTATE[HY000] [2002] Connection refused in _registry_check_code() (line 3499 of /var/www/vhosts/xn--pflegegte-w9a.de/httpdocs/includes/bootstrap.inc).