diff --git a/libraries/classes/ErrorReport.php b/libraries/classes/ErrorReport.php
index b7044f219e..b7e60de56b 100644
--- a/libraries/classes/ErrorReport.php
+++ b/libraries/classes/ErrorReport.php
@@ -113,7 +113,10 @@ class ErrorReport
                 return [];
             }
             $exception = $_POST['exception'];
-            $exception["stack"] = $this->translateStacktrace($exception["stack"]);
+
+            if (isset($exception["stack"])) {
+                $exception["stack"] = $this->translateStacktrace($exception["stack"]);
+            }
 
             if (isset($exception["url"])) {
                 list($uri, $scriptName) = $this->sanitizeUrl($exception["url"]);