brute force – curl to wfuzz translation

I am trying to run wfuzz to match the curl command which works, I know valid credentials but it doesn’t seem to pass it properly.

wfuzz -c -w user -w pass -b "session=cookie" --digest FUZZ:FUZ2Z ""

(user and pass files contain user and pass accordingly)

curl -c cookie --digest -u user:pass

The target is running Gunicorn web server