See Server doesn't restart after 1.15.6.1079 update [Please Update to FreeNAS 11.2 or FreeBSD 11.2 base]
tl;dr is that the minimum supported version is 11.2.
See Server doesn't restart after 1.15.6.1079 update [Please Update to FreeNAS 11.2 or FreeBSD 11.2 base]
tl;dr is that the minimum supported version is 11.2.