Error in simplesamlphp_auth.module: no valid attribute set
The General values for same will be as follows:

http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name

http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn

http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress

but if these not works you can also check the values in Metadata XML received from your IDP.