Cannot load game

I have a problem after trying to implement NIAGARA plugin into my project. After loading plugin I had to add “Niagara” to my build.cs code. After that I delete ‘Binary’, ‘Intermediate’ and ‘Saved’ files and rebuild entire project. But now when I’m trying to open a project it load 75% and pop up with an Error

Translate:
“The ‘RPG’ game module failed to load. There may be an operating system error, a module may be incorrectly configured, or a plugin included in the build may not have been enabled.”