From 8109b05b91fe45605d71e27d22eea6b59ea438a5 Mon Sep 17 00:00:00 2001
From: Samvel <Sam.Gevorgyan@gmail.com>
Date: Sat, 20 Jan 2018 13:04:22 +0400
Subject: [PATCH] Fixes error when buffer is empty

---
 src/Igorw/EventSource/EchoHandler.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Igorw/EventSource/EchoHandler.php b/src/Igorw/EventSource/EchoHandler.php
index f5fd6bf..8db87bf 100644
--- a/src/Igorw/EventSource/EchoHandler.php
+++ b/src/Igorw/EventSource/EchoHandler.php
@@ -16,7 +16,7 @@ class EchoHandler
     public function __invoke($chunk)
     {
         echo $chunk;
-        ob_flush();
+        if (ob_get_level() > 0) ob_flush();
         flush();
     }
 }