From c929626fc6de968902aeada12534e398669fc045 Mon Sep 17 00:00:00 2001
From: Sascha Nos <sascha.nos@kreuzquadrat.com>
Date: Tue, 5 Sep 2023 12:17:27 +0200
Subject: [PATCH] fix wrong type return

---
 flight/Engine.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/flight/Engine.php b/flight/Engine.php
index f8c996b..bd6921d 100644
--- a/flight/Engine.php
+++ b/flight/Engine.php
@@ -427,7 +427,8 @@ class Engine
                 $response->status($code);
             }
 
-            $response->write(ob_get_clean());
+            $content = ob_get_clean();
+            $response->write($content ?: '');
 
             $response->send();
         }