From 6f3a47f901cb3babd88ba26826924bbd1ea46dc4 Mon Sep 17 00:00:00 2001
From: Dan Howe <d.howe@wrl.unsw.edu.au>
Date: Thu, 19 Sep 2019 07:54:44 +1000
Subject: [PATCH] Improve error handling when loading files

---
 daqviewer/daqviewer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/daqviewer/daqviewer.py b/daqviewer/daqviewer.py
index 47da141..5fd9dc7 100644
--- a/daqviewer/daqviewer.py
+++ b/daqviewer/daqviewer.py
@@ -233,7 +233,7 @@ def read_json_data(json_data):
             html.Div()
         ])
 
-    elif json.loads(json_data)['error']:
+    elif 'error' in json.loads(json_data):
         filename = json.loads(json_data)['error']
         elements = html.Div([
             dcc.Graph(figure={