Sample cockpit doesn't work

Hi to all,
I have compiled the sample cockpit plugin, but this not work.

I see this warning:

28-Dec-2016 18:20:50.350 WARNING [http-nio-9090-exec-5] org.camunda.bpm.engine.rest.exception.RestExceptionHandler.toResponse org.camunda.bpm.engine.rest.exception.RestException: It was not able to load the following file ‘app/plugin.css’.

In cockpit webapp there isn’t a new plugin menu.

Where is my mistake ?

Thanks a lot

Bye

Andrea Bozzetto

I’m sorry it works.

I added an empty file plugin.css

bye

I’ve met the same problem,
coule you show me where you add the file (the path)