Having issue with ODL notification subscription

I having issues with the subscription in ODL for notifications through WebSocket .

> Accept: /
> Content-Type: application/json
> Content-Length: 178
>

• upload completely sent off: 178 out of 178 bytes
  < HTTP/1.1 405 Method Not Allowed
  < Set-Cookie: JSESSIONID=node013wpr7w0wwu0k1v6bqg5f1l4pe0.node0; Path=/; HttpOnly
  < Set-Cookie: rememberMe=deleteMe; Path=/; Max-Age=0; Expires=Mon, 06-Mar-2023 13:17:25 GMT; SameSite=lax
  < Allow: POST,GET,OPTIONS
  < Content-Length: 0
  <
• Connection #0 to host 127.0.0.1 left intact