diff --git a/Classes/Integration/NetlogixIntegration.php b/Classes/Integration/NetlogixIntegration.php
index 3bd43bc..5086a86 100644
--- a/Classes/Integration/NetlogixIntegration.php
+++ b/Classes/Integration/NetlogixIntegration.php
@@ -83,7 +83,9 @@ public static function handleEvent(Event $event, EventHint $hint): ?Event
         $rewrittenExceptions = array_map(
             function ($exception) {
                 $stacktrace = $exception->getStacktrace();
-                $exception->setStacktrace(self::rewriteStacktraceAndFlagInApp($stacktrace));
+                if ($stacktrace !== null) {
+                    $exception->setStacktrace(self::rewriteStacktraceAndFlagInApp($stacktrace));
+                }
                 return $exception;
             },
             $event->getExceptions()