When trying to create custom Application claim Cannot saveuser attribute

Question

Cannot save user attribute: The B2C service has an internal error. If you created this B2C directory just now, please try again after couple of minutes. If the problem persists, please contact Support (https://azure.microsoft.com/en-us/documentation/articles/active-directory-b2c-support/). If you do not have a B2C directory you can refer https://azure.microsoft.com/en-us/documentation/articles/active-directory-b2c-get-started/