Getting rid of the pesky "Uncaught exception in async net callback" Unity message

After some Unity update a couple of months back, an annoying error started showing in the console unexpectedly:

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:\BuildAgent\work\aeedb04a1292f85a\artifacts\EditorGenerated\GUISkinBindings.cs:268 
  at UnityEngine.GUIStyle.op_Implicit (System.String str) [0x00020] in C:\BuildAgent\work\aeedb04a1292f85a\artifacts\EditorGenerated\GUIStyleBindings.cs:833 
  at UnityEditor.ProjectBrowser.InitSearchMenu () [0x00014] in C:\BuildAgent\work\aeedb04a1292f85a\Editor\Mono\ProjectBrowser.cs:460 
  at UnityEditor.ProjectBrowser.AssetStoreSearchEndedCallback () [0x00000] in C:\BuildAgent\work\aeedb04a1292f85a\Editor\Mono\ProjectBrowser.cs:488 
  at UnityEditor.ObjectListArea+c__AnonStorey10.<>m__19 (UnityEditor.AssetStoreSearchResults results) [0x00356] in C:\BuildAgent\work\aeedb04a1292f85a\Editor\Mono\ObjectListArea.cs:407 
  at UnityEditor.AssetStoreResultBase`1[Derived].Parse (UnityEditor.AssetStoreResponse response) [0x000fc] in C:\BuildAgent\work\aeedb04a1292f85a\Editor\Mono\AssetStore\AssetStoreClient.cs:89 
  at UnityEditor.AssetStoreClient+c__AnonStorey2E.<>m__53 (UnityEditor.AssetStoreResponse ar) [0x00000] in C:\BuildAgent\work\aeedb04a1292f85a\Editor\Mono\AssetStore\AssetStoreClient.cs:751 
  at UnityEditor.AssetStoreClient+c__AnonStorey2D.<>m__51 (UnityEditor.AsyncHTTPClient job) [0x00012] in C:\BuildAgent\work\aeedb04a1292f85a\Editor\Mono\AssetStore\AssetStoreClient.cs:624 
UnityEditor.AsyncHTTPClient:Done(State, Int32)

Long story short, this is how you get rid of it: