Some users can't create reports in Jasper and get error "an error occurred on the server".
While other similar users can create them without problems.
We could see no obvious difference in the user settings that would explain this.
Release : 20.2
Component : Spectrum Core / SpectroSERVER
We created a new user and saw it had no problems, so as a workaround, new users will be created for the few users that have problems.