title: Error 404 in conslole odoo 9
body: <p>In cosole get below error. Any idea whats happened here?   </p>
  
  <pre><code>NotFound: 404: Not Found
      2018-06-12 09:59:38,732 47742 INFO ? werkzeug: 127.0.0.1 - - [12/Jun/2018 09:59:38] "POST /longpolling/poll HTTP/1.1" 200 -
      2018-06-12 10:00:04,722 47742 ERROR ? openerp.http: Exception during JSON request handling.
      Traceback (most recent call last):
        File "/home/git/odoo/openerp/http.py", line 648, in _handle_exception
          return super(JsonRequest, self)._handle_exception(exception)
        File "/home/git/odoo/openerp/http.py", line 1631, in _dispatch_nodb
          func, arguments = self.nodb_routing_map.bind_to_environ(request.httprequest.environ).match()
        File "/usr/lib/python2.7/dist-packages/werkzeug/routing.py", line 1433, in match
  </code></pre>