Xcode, Pods ProjectName.debug.xcconfig unable to open file. Wrong directory

Question

When I build project, I see build error: ProjectName.debug.xcconfig unable to open file. I couldn\'t understand my problem for a long time, but today I take att

Answer 1

I have encored with this solution...Here is how I solved

Close Xcode, 
run on terminal "pod install"
open xcode,
clean build folder and run again