SFOS 19 RED Configuration Internal Error

How did you get this state in the first place? RED is disabled but you have a RED Appliance configured? That should go to Sophos Support, as this looks like a database issue. 

There is no problem with the red device i have run with another sophos xg. I got into this situation when the structure of SOPHOS HA broke down. The device license was dropped when HA broke down, the problem I mentioned above was not fixed when I fixed the license issue

I deleted everything associated with the red device. Rules, DHCP, etc.then the problem was fixed