I am new to ios development.
I am using Xcode 6.4 and iOS 8.4.1, when I'm trying to run my app on my device I get this message from xcode:
No valid signing identities (i.e. certificate and private key pair) matching the team ID “(null)” were found.
Xcode can attempt to fix this issue.
And when clicking "Fix issue" it suggesting me to enrol Apple's dev program. by the way I had it once and now it outdated, so how can I over come this problem and run the app without enrolling again?