Fatal error: Uncaught PDOException: PDO::__construct(): php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/html/src/Database/Connection.php:33 Stack trace: #0 /var/www/html/src/Database/Connection.php(33): PDO->__construct('mysql:host=db;p...', 'getraenke', Object(SensitiveParameterValue), Array) #1 /var/www/html/src/Application.php(35): App\Database\Connection->pdo() #2 /var/www/html/public/index.php(27): App\Application->__construct(Object(App\Config), Object(App\Database\Connection)) #3 {main} Next PDOException: SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/html/src/Database/Connection.php:33 Stack trace: #0 /var/www/html/src/Database/Connection.php(33): PDO->__construct('mysql:host=db;p...', 'getraenke', Object(SensitiveParameterValue), Array) #1 /var/www/html/src/Application.php(35): App\Database\Connection->pdo() #2 /var/www/html/public/index.php(27): App\Application->__construct(Object(App\Config), Object(App\Database\Connection)) #3 {main} Next PDOException: DB connection failed: SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/html/src/Database/Connection.php:35 Stack trace: #0 /var/www/html/src/Application.php(35): App\Database\Connection->pdo() #1 /var/www/html/public/index.php(27): App\Application->__construct(Object(App\Config), Object(App\Database\Connection)) #2 {main} thrown in /var/www/html/src/Database/Connection.php on line 35