+ protected function displayErrorResponse($res)
+ {
+ Log::err(
+ 'Server returned an error status code ' . $res->getStatus()
+ );
+
+ $shown = false;
+ if (Util::getMimeType($res) == 'application/json') {
+ $errData = json_decode($res->getBody());
+ if (!isset($errData->error)) {
+ Log::err('Error response does not contain "error" property');
+ } else if (isset($errData->error_description)) {
+ Log::err($errData->error . ': ' . $errData->error_description);
+ $shown = true;
+ } else {
+ Log::err($errData->error);
+ $shown = true;
+ }
+ }
+
+ if (!$shown) {
+ Log::err($res->getBody());
+ }
+ exit(11);
+ }
+