Adding PFSYNC rule to HA port causes a crash

[kevin192291]

On a brand new install of OpnSense on a Sophos SG330 I am attempting to setup HA.

I create an HA interface that corresponds with the HA port on the box.
I create a PFSync rule in the firewall as shown in this tutorial: https://devopstales.github.io/linux/opnsense-ha/
I get a crash message on the dashboard right after specifically the PFSync rule is added. The software never seems to recover.

Code Select Expand

[13-Feb-2021 17:22:15 Etc/UTC] PHP Warning:  in_array() expects parameter 2 to be array, string given in /usr/local/www/firewall_rules_edit.php on line 1222

Any idea why I am getting this error, or what I may be missing in my config? I had this working before. I am guessing There is something I am not doing that needs to happen before.

Thanks for the help.
-Kevin