octoprint 500 error from upload with invalid extension

octoprint.log

2018-01-21 21:23:55,291 - octoprint - ERROR - Exception on /api/files/local [POST]
Traceback (most recent call last):
  File "/home/pi/oprint/local/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/pi/oprint/local/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/pi/oprint/local/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.6-py2.7.egg/octoprint/server/util/flask.py", line 1114, in decorated_view
    return flask.ext.login.login_required(func)(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/Flask_Login-0.2.11-py2.7.egg/flask_login.py", line 758, in decorated_view
    return func(*args, **kwargs)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.6-py2.7.egg/octoprint/server/api/files.py", line 348, in uploadGcodeFile
    display=canonFilename)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.6-py2.7.egg/octoprint/filemanager/__init__.py", line 473, in add_file
    self._analysis_queue.dequeue(queue_entry)
  File "/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.6-py2.7.egg/octoprint/filemanager/analysis.py", line 86, in dequeue
    if not entry.type in self._queues:
AttributeError: 'NoneType' object has no attribute 'type'
2018-01-21 21:23:55,297 - tornado.access - ERROR - 500 POST /api/files/local (127.0.0.1) 4902.57ms