Can't test lw notification using easycwmpd with genieacs version 1.2.9

1

When I set the cwmp version=4. The easycwmpd will send “urn:dslforum-org:cwmp-1-4” which genieacs think it Unrecognized CWMP version.The code is as follows：

switch (namespaceHref) {
  case "urn:dslforum-org:cwmp-1-0":
    rpc.cwmpVersion = "1.0";
    break;
  case "urn:dslforum-org:cwmp-1-1":
    rpc.cwmpVersion = "1.1";
    break;
  case "urn:dslforum-org:cwmp-1-2":
    if (rpc.sessionTimeout) rpc.cwmpVersion = "1.3";
    else rpc.cwmpVersion = "1.2";

    break;
  case "urn:dslforum-org:cwmp-1-3":
    rpc.cwmpVersion = "1.4";
    break;
  default:
    throw new Error("Unrecognized CWMP version");
}

I want to know why the code judge so？Please help me take a look.