It usually means the regex you have set to allow the project keys is wrong, and you've tried to set an invalid key.
What do you have under admin -> general settings -> advanced -> key pattern ?
Online forums and learning are now in one easy-to-use experience.
By continuing, you accept the updated Community Terms of Use and acknowledge the Privacy Policy. Your public name, photo, and achievements may be publicly visible and available in search engines.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.