When quitting, error is raised in console

When stopping debug Django application, bugjar hangs for some time and then errror is raising in console

> File "/home/khalikov/virtualenvs/PROC26/bin/bugjar", line 9, in
> load_entry_point('bugjar==0.1.0', 'console_scripts', 'bugjar')()
> File "/home/khalikov/virtualenvs/PROC26/lib/python2.6/site-packages/bugjar-0.1.0- py2.6.egg/bugjar/main.py", line 77, in local
> jar_run(debugger)
> File "/home/khalikov/virtualenvs/PROC26/lib/python2.6/site-packages/bugjar-0.1.0-py2.6.egg/bugjar/main.py", line 28, in jar_run
> view.on_quit()
> AttributeError: 'MainWindow' object has no attribute 'on_quit'

defining empty method

> def on_quit(self):
> pass

of MainWindow helps