From b8d3b42295d557784e5ab990a927e612f7fd4872 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BC=98=E9=9F=AC=20=E5=BC=A0?= <hongtao_zhang@outlook.com>
Date: Sat, 5 Dec 2020 15:48:36 +0800
Subject: [PATCH] use singleordefault instead of single since sometims the
 queue may be empty but method doesn't return

---
 Flow.Launcher/ViewModel/MainViewModel.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Flow.Launcher/ViewModel/MainViewModel.cs b/Flow.Launcher/ViewModel/MainViewModel.cs
index 1329421c3..25768a25e 100644
--- a/Flow.Launcher/ViewModel/MainViewModel.cs
+++ b/Flow.Launcher/ViewModel/MainViewModel.cs
@@ -724,7 +724,8 @@ namespace Flow.Launcher.ViewModel
 
             try
             {
-                token = resultsForUpdates.Select(r => r.Token).Distinct().Single();
+                // Don't know why sometimes even resultsForUpdates is empty, the method won't return;
+                token = resultsForUpdates.Select(r => r.Token).Distinct().SingleOrDefault();
             }
 #if DEBUG
             catch