From 3759a03b0f66093f44909acbea6267d86f2fd2a2 Mon Sep 17 00:00:00 2001
From: Jellyfrog <Jellyfrog@users.noreply.github.com>
Date: Mon, 13 Jul 2020 16:24:31 +0200
Subject: [PATCH] Only flush if there is something to flush (#11927)

---
 app/StreamedOutput.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/StreamedOutput.php b/app/StreamedOutput.php
index ddfafb7319..e589f0b3cc 100644
--- a/app/StreamedOutput.php
+++ b/app/StreamedOutput.php
@@ -38,7 +38,9 @@ class StreamedOutput extends StreamOutput
 
         echo $message . PHP_EOL;
 
-        ob_flush();
+        if (ob_get_level() > 0) {
+            ob_flush();
+        }
         flush();
     }
 }