Each time you got this ugly error
1.close the unreal
2.close visual studio
3.go to project file → binaries → win64 → delete the files inside that
4.run visual studio
5.in right side → click in Game File → right Click on project name → Rebuild
6. then that way but Build
IF you got success from two Above section THEN
7.ctrl+F5 to run unreal
its worked for me after 1 day searching in this poor community