hi need some ios developer to solve this problem max 20-35 min work

Hello we are facing some problem in developing the ios phone application file our code is working fine in android and web. but when we are trying to build ios app it showing the error. We are using phone gap for developing the application (You must provide a signing key, first.) this is the Error message this is how it can be resolve i guess You must provide a signing key, first. Find out how to fix this. [login to view URL]