Error logged when downloading user log results

[lcorreia]

Download works fine, but an error is logged to wok-error.log:

[07/Dec/2016:14:27:17] HTTP Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/cherrypy/_cprequest.py", line 670, in respond
response.body = self.handler()
File "/usr/lib/python2.7/dist-packages/cherrypy/lib/encoding.py", line 217, in call
self.body = self.oldhandler(*args, **kwargs)
File "/usr/lib/python2.7/dist-packages/cherrypy/_cpdispatch.py", line 61, in call
return self.callable(*self.args, **self.kwargs)
File "/usr/lib/python2.7/dist-packages/cherrypy/_cptools.py", line 175, in handle_func
handled = self.callable(*args, **self._merged_args(kwargs))
TypeError: staticfile() got multiple values for keyword argument 'filename'

[lcorreia]

Still reproducible.