Error when adding user: Address object in Group
I have a TZ400. I'm trying to add a new user for SSL VPN access in Users Local Users & Groups Local Users. I've already done this successfully for several users but today I'm getting an error: "Error: Address Object in Group: Adding LAN Subnets to joe91cf7da38ea772b55e1ee3694: Address object LAN Subnets overlaps with address object LAN subnets.
I've re-tried adding this user several times with no luck. The "LAN Subnets" is configured in the "VPN Access" tab of the Local Users page.
How do I fix this?