Missing iOS Distribution signing identity

Question

I deleted all my provisioning profiles from my Mac by mistake (Library/Mobile Device/Provisioning Profiles). Now, no matter what I do, Xcode gives me this error:

Answer 1

Check here: https://forums.developer.apple.com/thread/37208

Download https://developer.apple.com/certificationauthority/AppleWWDRCA.cer and double-click to install to Keychain.

Select "View" -> "Show Expired Certificates" in Keychain app.

Remove Apple Worldwide Developer Relations Certificate Authority certificates from "login" tab and "System" tab in Keychain app.