Additional uncaught exception thrown while handling exception.

Original

PDOException: SQLSTATE[HY000] [2003] Can't connect to MySQL server on '127.0.0.1' (111) in _registry_check_code() (line 3165 of /var/www/html/includes/bootstrap.inc).

Additional

PDOException: SQLSTATE[HY000] [2003] Can't connect to MySQL server on '127.0.0.1' (111) in _registry_check_code() (line 3165 of /var/www/html/includes/bootstrap.inc).