After setting nginx to my butterfly, run error that failed: Error during WebSocket handshake: Unexpected response code: 400

[yozosann]

My nginx :
server { listen 80; server_name myterm.yozosann.com; location / { proxy_pass http://www.yozosann.com:8756/; } }

you can go myterm.yozosann.com, then you can go console, you will get a error:

WebSocket connection to 'ws://myterm.yozosann.com/ws/session/85489e64-de76-416c-91bf-19d8b0f25293' failed: Error during WebSocket handshake: Unexpected response code: 400
(anonymous) @ main.min.js?v=df6a4e9d51979f9d263364d1d32f1965:3
main.min.js?v=df6a4e9d51979f9d263364d1d32f1965:3 WebSocket error Arguments(1)
d @ main.min.js?v=df6a4e9d51979f9d263364d1d32f1965:3
main.min.js?v=df6a4e9d51979f9d263364d1d32f1965:3 WebSocket connection to 'ws://myterm.yozosann.com/ctl/session/85489e64-de76-416c-91bf-19d8b0f25293' failed: Error during WebSocket handshake: Unexpected response code: 400

What should i do ?

[csik]

Did you figure this out? Started happening for me as well for a long running process with no changes to the system.