SOLVED jails/.warden-template-standard@clean': dataset does not exist

[glauco]

FreeNAS won't let me create a new jail.
I'm getting this error (watch embedded video):
[warden_exception: cannot open 'MyVolume/jails/.warden-template-standard@clean': dataset does not exist ERROR: Failed creating clean ZFS base clone ]
The .warden-template-standard dataset, however, does exist.
root@freenas:/mnt/MyVolume/jails # zfs list | grep standard
MyVolume/jails/.warden-template-standard 3.00G 9.10T 2.91G /mnt/MyVolume/jails/.warden-template-standard

I have no idea what changed, because I've created standard jails in the past without any issues.
Thanks.

 

[glauco]

On a second thought, .warden-template-standard exists but .warden-template-standard@clean does not.
Should I create it somehow?

 

[glauco]

It seems that I have fixed it!
I went to Storage -> Volumes -> selected dataset '.warden-template-standard' and created a snapshot called 'clean'.
After that, adding a jail worked!
I have no idea why that snapshot wasn't there in the first place... I may have deleted it inadvertently.