DebugKit 4 in CakePhp4

i copied the sample connection from the cookbook. It includes mysql as driver. Here’s what’s in my app_local.php as part of my dataconnections:

        /**
         * The debug_kit connection stores DebugKit meta-data.
         */
         'debug_kit' => [
            'className' => 'Cake\Database\Connection',
            'driver' => 'Cake\Database\Driver\Mysql',
            'persistent' => false,
            'host' => 'mysql.bytecamp.net',
            //'port' => 'nonstandard_port_number',
            'username' => '#myuser',    // Your DB username here
            'password' => '#mypassword',    // Your DB password here
            'database' => '#mydb',
            'encoding' => 'utf8',
        //    'timezone' => 'UTC',
            'cacheMetadata' => true,
            'quoteIdentifiers' => false,
             //'init' => ['SET GLOBAL innodb_stats_on_metadata = 0'],
        ],