App.xcodeproj: error: Revoke certificate: Your account already has an Apple Development signing certificate for this machine, but its private key is not installed in your keychain.
App.xcodeproj: error: No signing certificate "iOS Development" found: No "iOS Development" signing certificate matching team ID "T....." with a private key was found.
From the above error during build, I do not know what I am supposed to do to fix this issue. The build was working few days back and today it is giving this error.