diff --git a/app/workers/functions.php b/app/workers/functions.php
index 1a499c2d19..d1cff1f125 100644
--- a/app/workers/functions.php
+++ b/app/workers/functions.php
@@ -413,7 +413,7 @@ class FunctionsV1 extends Worker
                 timeout: 60);
 
             if (!$untarSuccess) {
-                throw new Exception('Error untarring code');
+                throw new Exception('Failed to extract tar: '.$stderr);
             }
 
             $executionEnd = \microtime(true);