Wallet is not able to establish a wss:// connection

[Deleted user]

We are running a mediator in our environment on HTTPS but when we connect with the mediator connection is completed but during mediator request we are getting error when connecting with WSS://

 "errors": [
    {
      "isTrusted": false,
      "message": "Expected HTTP 101 response but was '200 OK'"
    }
  ],