Can't create replication task to local destination

I am running TrueNAS 25.04.1 and I am unable to create a replication task to a local storage pool, the creation UI just seems to hang after I click save.

I have created a local storage pool on an external drive for backups, I have tried to follow the documentation, and I have tried creating the task with various settings, but it jsut does not seem to work.

Any help would be appreciated, as I’m not sure what else to try.

Seems I can’t upload screenhshots, or share links to not sure how to add details of what I have tried to do.

It seems the creation fails when I try to create a replication task with 'Replicate Custom Snapshots" selected.