From 7e9154e64d2a743903b1f9400bd254a039816ca0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=80=E8=90=8C=E5=B0=8F=E6=B1=90?= <sumneko@hotmail.com>
Date: Mon, 23 Sep 2019 18:56:25 +0800
Subject: =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E6=8A=A5=E9=94=99?=
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---
 server/src/core/diagnostics.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/src/core/diagnostics.lua b/server/src/core/diagnostics.lua
index 0e0d85ba..e5fd0ba5 100644
--- a/server/src/core/diagnostics.lua
+++ b/server/src/core/diagnostics.lua
@@ -563,7 +563,7 @@ function mt:searchGlobalInNilEnv(callback)
             return
         end
         local parentSource = source:get 'parent' :getSource()
-        if parentSource.type == 'nil' then
+        if parentSource and parentSource.type == 'nil' then
             callback(source.start, source.finish, {
                 {
                     start  = parentSource.start,
-- 
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