Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for mysql failed: Name or service not known in /var/www/html/bow/950/include/query_function.php on line 50

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for mysql failed: Name or service not known in /var/www/html/bow/950/include/query_function.php:50 Stack trace: #0 /var/www/html/bow/950/include/query_function.php(50): mysqli_connect() #1 /var/www/html/bow/950/include/variabiliambiente.php(8): include('...') #2 /var/www/html/bow/950/include/sessionicms.php(64): include('...') #3 /var/www/html/bow/950/cms/index.php(32): include('...') #4 {main} thrown in /var/www/html/bow/950/include/query_function.php on line 50