How to run ionic app with source codes?

I have got application source codes.This app has got ionic app side, restful web service with json light and mysql database but when I try to open application with nodejs.I saw the application main page but I cant go any direction in app and its warn me “config.xml file could not be found in the application’s root or is malformed XML”.I think I can open just app side.Program cant connect other parts.I have got 3 file www(app folder),sample.sql(I thnk mysql information) and sample(restful webservice files) Should I throw the same file in all files or what? Its urgent for me,ty