ID4064: Custom configuration provided for MembershipUserNameSecurityTokenHandler does not specify a valid MembershipProvider ...

ID4064: Custom configuration provided for MembershipUserNameSecurityTokenHandler does not specify a valid MembershipProvider name. Use the 'membershipProviderName' attribute on the 'userNameSecurityTokenHandlerRequirement' element to specify a valid name for a MembershipProvider specified in the system.web/membership configuration section.