From 28d6439af7908f613cf28f3901214f5db57ebe47 Mon Sep 17 00:00:00 2001
From: Andrey Zhavoronkov <41117609+azhavoro@users.noreply.github.com>
Date: Thu, 25 Apr 2019 15:20:38 +0300
Subject: [PATCH] don't generate additional log messages in case of send
 exception request was failed with 0 status (#426)

---
 cvat/apps/engine/static/engine/js/logger.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/cvat/apps/engine/static/engine/js/logger.js b/cvat/apps/engine/static/engine/js/logger.js
index f32df1c7..3e155d6d 100644
--- a/cvat/apps/engine/static/engine/js/logger.js
+++ b/cvat/apps/engine/static/engine/js/logger.js
@@ -113,7 +113,12 @@ class LoggerHandler {
                     }
                 };
                 xhr.onerror = () => {
-                    onreject();
+                    //  if status === 0 a request is a failure on the network level, ignore it
+                    if (xhr.status === 0) {
+                        resolve(xhr.response);
+                    } else {
+                        onreject();
+                    }
                 };
                 xhr.send(JSON.stringify(exception.serialize()));
             };