diff --git a/Speed/Convoy.php b/Speed/Convoy.php
index ebb7ad9..a215363 100644
--- a/Speed/Convoy.php
+++ b/Speed/Convoy.php
@@ -21,7 +21,9 @@ class Convoy extends Server
         ])->$method($req_url, $data);
 
         if (!$response->successful()) {
-            throw new Exception($response->json()['message']);
+            $json = $response->json();
+            $message = $json['message'] ?? $json['error'] ?? 'Server Error';
+            throw new Exception($message);
         }
 
         return $response->json() ?? [];