Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for lamp_db failed: Temporary failure in name resolution in /var/www/html/config.php on line 6

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for lamp_db failed: Temporary failure in name resolution in /var/www/html/config.php:6 Stack trace: #0 /var/www/html/config.php(6): mysqli_connect('lamp_db', 'e3p1x8y4_strain...', Object(SensitiveParameterValue), 'e3p1x8y4_strain') #1 /var/www/html/functions.php(2): require('/var/www/html/c...') #2 /var/www/html/compare.php(4): require_once('/var/www/html/f...') #3 {main} thrown in /var/www/html/config.php on line 6