https://discussions.unity.com/t/loadlevelasync-557221/557221
LoadLevelAsync (557221) - Unity Engine - Unity Discussions
Nov 17, 2014 - Hello! When I recive data from the server, I always get this error: " LoadLevelAsync can only be called from the main thread. Constructors and field...
unity enginediscussions
https://docs.unity3d.com/6000.4/Documentation/ScriptReference/Application.LoadLevelAsync.html
Unity - Scripting API: Application.LoadLevelAsync
scripting apiunityapplication