Warning: mysqli::__construct(): (HY000/2002): No such file or directory in /volume2/www/vhosts/magento2/_fpc/fpc.php on line 1713

Fatal error: Uncaught Error: Wrong parameters for Exception([string $message [, long $code [, Throwable $previous = NULL]]]) in /volume2/www/vhosts/magento2/_fpc/fpc.php:1719 Stack trace: #0 /volume2/www/vhosts/magento2/_fpc/fpc.php(1719): Exception->__construct('Connect failed:...', 'No such file or...') #1 /volume2/www/vhosts/magento2/_fpc/fpc.php(406): Fpc_Mysql_Connection->init('localhost', 'magento2utils', 'fTEwf34X', 'magento2_utils') #2 /volume2/www/vhosts/magento2/_fpc/fpc.php(71): Fpc->connectToMysql() #3 /volume2/www/vhosts/magento2/index.php(112): Fpc->run() #4 {main} thrown in /volume2/www/vhosts/magento2/_fpc/fpc.php on line 1719