Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/system/library/db/mysqli.php on line 72

Warning: mysqli::__construct(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/system/library/db/mysqli.php on line 72

Fatal error: Uncaught Exception: Error: Could not make a database link using user_resto_v7@v7_db. MySQL error: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution (Error No: 2002) in /var/www/html/system/library/db/mysqli.php:75 Stack trace: #0 /var/www/html/system/library/db.php(9): DB\MySQLi->__construct('v7_db', 'user_resto_v7', 'IWNG3rMNnC7lPGq...', 'resto_v7_yoshi1...', '3306') #1 /var/www/html/system/framework.php(25): DB->__construct('mysqli', 'v7_db', 'user_resto_v7', 'IWNG3rMNnC7lPGq...', 'resto_v7_yoshi1...', '3306') #2 /var/www/html/index.php(25): require_once('/var/www/html/s...') #3 {main} thrown in /var/www/html/system/library/db/mysqli.php on line 75