Cannot build app: Bundle identifier error

Every time, I try to compile my app on xcode I get this error: The bundle identifier could not be determined. Check your info.plst file. The thing is that I made sure to use the correct app id in the info.plst file and all my certificates and profiles are up to date. I'm not sure what went wrong. I have to tried to manually delete my provisioning profiles and then restart xcode, but that hasn't worked. Not sure what to do.