Fix broken unit-tests for ServerController.

Author: Potherca

solid/tests/Unit/Controller/ServerControllerTest.php

@@ -348,6 +348,7 @@ public function testRegisterWithRedirectUris()
 				'registration_client_uri' => '',
 				'response_types' => ['id_token token'],
 				'token_endpoint_auth_method' => 'client_secret_basic',
+				'client_secret' => '3b5798fddd49e23662ee6fe801085100'
 			],
 			'headers' => [
 				'Cache-Control' => 'no-cache, no-store, must-revalidate',
@@ -369,6 +370,7 @@ public function testToken()
 	{
 		$_POST['client_id'] = self::MOCK_CLIENT_ID;
 		$_POST['code'] = '';
+		$_POST['grant_type'] = 'authorization_code';
 		$_SERVER['HTTP_DPOP'] = 'mock dpop';
 		$_SESSION['nonce'] = 'mock nonce';