Any xhtml that I call arises the same error "Cannot set property 'component' of null".
I found a couple of links with the same problem. It looks like the latest Chromes problem. For instance this topic:
I guess you can try
to workaround this problem.
I had used submitMode="ajax". But with "server" didn't work too.
The same error of modalPanel.js.jsf arises in Chrome JS Console.