Update module.config.php

module/Demo/config/module.config.php

@@ -9,7 +9,7 @@ return [
     'doctrine' => [
         'connection' => [
             'orm_default' => [
-                'driverClass' => \Doctrine\DBAL\Driver\PDOPgSql\Driver::class,
+                'driverClass' => '\Doctrine\DBAL\Driver\PDO\PgSQL\Driver',
                 'params' => [
                     'host' => 'db',        //
                     'user' => 'admin',     // cf. docker-compose.yml
@@ -17,6 +17,7 @@ return [
                     'dbname' => 'demo',    //
                     'port' => '5432',
                     'charset' => 'utf8',
+                    'driver' => 'pdo_pgsql',
                     'driverOptions' => [1002 => 'SET NAMES utf8']
                 ],
             ],