fix a null using issue and add ignore regular file

Author: JohnUseUnity

.gitignore

@@ -0,0 +1,41 @@
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uilds/
+/Assets/AssetStoreTools*
+
+# Visual Studio 2015 cache directory
+/.vs/
+
+# Autogenerated VS/MD/Consulo solution and project files
+ExportedObj/
+.consulo/
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pdb
+
+# Unity3D generated meta files
+*.pidb.meta
+
+# Unity3D Generated File On Crash Reports
+sysinfo.txt
+
+# Builds
+*.apk
+*.unitypackage
+Assets/_Ignore
+_Ignore.meta
+.idea
+Logs
+Assets/Plugins/Editor/JetBrains
+Assets/Plugins/Editor/JetBrains.meta
+Recordings

Assets/_Complete-Game/Scripts/Core/LuaInterface/LuaScriptManager.cs

@@ -1,4 +1,6 @@
 using System.Collections.Generic;
+using System.IO;
+using System.Text;
 using UnityEngine;
 using UnityEngine.AddressableAssets;
 using UnityEngine.ResourceManagement;