Failed to launch editor

Hi guys. I am hitting the following error again and again when using custom engine build (4.26). When I am trying to launch the editor via .uproject file I am getting a popup window saying “Failed to launch editor”. If I launch my Visual Studio project in debug,the editor opens okay. But I can’t get the editor open from the .uproject file.

I have the same problem. Can’t find any solution. Very annoying.