Add Manager, potential bug

Running FreePBX 3.211.63-8 with all modules current as of time of post.

When I go to Settings-Asterisk API and try to add a manager, this error window appears when I click submit:

“The manager deny is not well formatted”

This happens when the field is blank and when I enter a properly formatted IP address.

The field can’t be blank. And please show us what you are putting for a properly formated ip addesss.

192.168.1.1
When I changed that to 192.168.1.1/255.255.255.0 it accepted it.
What would be the proper syntax to allow the manager to login only from the Asterisk server?

Deny should be 0.0.0.0/0.0.0.0, permit should be 127.0.0.1/255.255.255.255. This will allow connections from localhost only.