"Uncaught exception in async ..." warnings in console

I have a lobby-based project and when I run it I get a warning message in the console:
The app seems to run fine, but I have no idea what its problems is.

Anyone have a clue how to get rid of it?

Uncaught exception in async net callback: Object reference not set to an instance of an object
UnityEditor.AsyncHTTPClient:Done(State, Int32)
at UnityEngine.GUISkin.GetStyle (System.String styleName) [0x00010] in C:\buildslave\unity\build\Runtime\IMGUI\Managed\GUISkin.cs:312
at UnityEngine.GUIStyle.op_Implicit (System.String str) [0x00020] in C:\buildslave\unity\build\Runtime\IMGUI\Managed\GUIStyle.cs:566
at UnityEditor.ProjectBrowser.InitSearchMenu () [0x00014] in C:\buildslave\unity\build\Editor\Mono\ProjectBrowser.cs:483
at UnityEditor.ProjectBrowser.AssetStoreSearchEndedCallback () [0x00000] in C:\buildslave\unity\build\Editor\Mono\ProjectBrowser.cs:511
at UnityEditor.ObjectListArea+c__AnonStorey3A.<>m__50 (UnityEditor.AssetStoreSearchResults results) [0x00356] in C:\buildslave\unity\build\Editor\Mono\ObjectListArea.cs:406
at UnityEditor.AssetStoreResultBase`1[Derived].Parse (UnityEditor.AssetStoreResponse response) [0x000fc] in C:\buildslave\unity\build\Editor\Mono\AssetStore\AssetStoreClient.cs:89
at UnityEditor.AssetStoreClient+c__AnonStorey53.<>m__91 (UnityEditor.AssetStoreResponse ar) [0x00000] in C:\buildslave\unity\build\Editor\Mono\AssetStore\AssetStoreClient.cs:751
at UnityEditor.AssetStoreClient+c__AnonStorey52.<>m__8F (UnityEditor.AsyncHTTPClient job) [0x00012] in C:\buildslave\unity\build\Editor\Mono\AssetStore\AssetStoreClient.cs:624
UnityEditor.AsyncHTTPClient:Done(State, Int32)

Have you seen this?
Getting rid of the pesky “Uncaught exception in async net callback” Unity message

Have you seen this?
Getting rid of the pesky “Uncaught exception in async net callback” Unity message