could not send heartbeat to nix! Error was non-success status code 401

[trymeout]

When I run a dedicated server, in the terninal window, I keep getting this error

"could not send heartbeat to nix! Error was non-success status code 401"

I was not having this issue a few weeks ago. I do have port 28960 forwarded, I am not even running the T4 game client at the same time to occupy port 28960. The firewall setting are set to allow plutonium to allow private and public connections.

Any help will be most appreciated.

[R3V01UX]

i also get this