I originally tried using websocket but never defined the api/websocket so Ill give that a try.
Actually had this in my config last night and removed it this morning while trying to test it. haha
Edit: @comp500 I just tried what you suggested and I am still getting the same result as the pic in the OP.
proxy /portainer 192.168.1.60:9000 {
without /portainer
transparent
websocket
}
proxy /portainer/api/websocket 192.168.1.60:9000 {
without /portainer
transparent
websocket
}
}