Session will not persists in CI 3.1.11 with CI Rest Api, no matter what I do

.localhost:4011 = Not a valid domain.

Use 'localhost' (becomes .localhost), '.localhost' or NULL (becomes localhost).

Thanks, I changed this but I still have the same problem. As soon as I log in, when I try another ajax request it says I am unauthorized. By the time log in occurs, the session has regenerated 4 times on 1 single request.

Also the garbage collection never seems to happen, session files just pile up.