Added 401 in case of missing key to api/radio for easier debugging

application/controllers/Api.php

@@ -635,6 +635,7 @@ class API extends CI_Controller {
 		$obj = json_decode(file_get_contents("php://input"), true);
 
 		if(!isset($obj['key']) || $this->api_model->authorize($obj['key']) == 0) {
+			http_response_code(401);
 			echo json_encode(['status' => 'failed', 'reason' => "missing api key"]);
 			die();
 		}