Warning: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /home/vps100797715/sfrrj2017.org/submission/common.inc on line 78

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known' in /home/vps100797715/sfrrj2017.org/submission/common.inc:78 Stack trace: #0 /home/vps100797715/sfrrj2017.org/submission/common.inc(78): PDO->__construct('mysql:host=sddb...', 'sddbMjAxMTE1', 'neko0218#') #1 /home/vps100797715/sfrrj2017.org/submission/main.php(25): connectDB('sddb0040192392....', 'sddb0040192392', 'sddbMjAxMTE1', 'neko0218#') #2 {main} thrown in /home/vps100797715/sfrrj2017.org/submission/common.inc on line 78