From b21200c6a814c6e9303fe416bed60f06d04c3a7a Mon Sep 17 00:00:00 2001
From: Lipu Fei <lipu.fei815@gmail.com>
Date: Wed, 5 Sep 2018 17:16:56 +0200
Subject: [PATCH] Check for None before updating model

CURA-5670
---
 plugins/Toolbox/src/AuthorsModel.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/Toolbox/src/AuthorsModel.py b/plugins/Toolbox/src/AuthorsModel.py
index 45424d7e42..bea3893504 100644
--- a/plugins/Toolbox/src/AuthorsModel.py
+++ b/plugins/Toolbox/src/AuthorsModel.py
@@ -33,6 +33,9 @@ class AuthorsModel(ListModel):
 
     def _update(self):
         items = []
+        if not self._metadata:
+            self.setItems([])
+            return
 
         for author in self._metadata:
             items.append({