I can connect in firefox and Chrome but not Safari

[BesatZardosht]

I cannot connect to my server using Safari.

this is my config file:
{ "isDev": true, "http": { "host": "localhost", "port": 8000 }, "server": { "domain": "myserver.com", "wss": "ws://myserver.com:5280/websocket/", "admin": "ejabberd", "muc": "conference.myserver.com" } }

I get this error:
TypeError: def.values.map is not a function. (In 'def.values.map(function (item) { return item.toString(); })', 'def.values.map' is undefined)

I can open http://myserver.com:5280/websocket from Safari but the chat client won't connect. And everything works fine in firefox and Chrome.

I really appreciate any help!