Fatal error: Uncaught Error: Failed opening required '/usr/share/nginx/html/includes/theme.maintenance.inc' (include_path='.:/usr/local/lib/php') in /usr/share/nginx/html/includes/bootstrap.inc:2944
Stack trace:
#0 /usr/share/nginx/html/includes/errors.inc(177): drupal_maintenance_theme()
#1 /usr/share/nginx/html/includes/bootstrap.inc(2670): _drupal_log_error(Array, true)
#2 [internal function]: _drupal_exception_handler(Object(PDOException))
#3 {main}
thrown in /usr/share/nginx/html/includes/bootstrap.inc on line 2944
Uncaught exception thrown in shutdown function.
PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: DELETE FROM {semaphore}
WHERE (value = :db_condition_placeholder_0) ; Array
(
[:db_condition_placeholder_0] => 176865049682ce5da0a45d7.95188195
)
in lock_release_all() (line 269 of /usr/share/nginx/html/includes/lock.inc).