报错信息
This application failed to start because it could not find or load the Qt platform plugin "offscreen".
Available platform plugins are: phantom.
Reinstalling the application may fix this problem.
PhantomJS has crashed. Please read the bug reporting guide at
http://phantomjs.org/bug-reporting.html and file a bug report.
phantomjs version:
Generating file ...
generating market info failed, skip! details: [u'']
