If you are getting no flow from the steam or hot water spout, and descaling the machine has not resolved the issue, then it is necessary to replace the solenoid valve.
The following video applies to all Gaggia Anima models. If you need to replace the solenoid, it can be purchased Here.
If you prefer to send your machine in for service, please Submit a Support Request for Repair
Gaggia Anima: How to Replace the Solenoid Valve