Use more applicable error when anonymous user tries to obtain a roster

Description

When an anonymous user tries to interact with a roster (which anonymous users do not have), an error should be (and is) returned:

internal-server-error / wait is not an appropriate error. A more appropriate error should be returned.
 

Environment

None
Fixed

Assignee

Guus der Kinderen

Reporter

Guus der Kinderen

Labels

None

Expected Effort

None

Ignite Forum URL

None

Fix versions

Priority

Minor
Configure