Traceback (most recent call last):


 "./ffmpeg2vmaf", line 191, in <module>

ret = main()


 "./ffmpeg2vmaf", line 155, in main

runner.run()


 "/home/ubuntu/VMAF/vmaf/python/src/vmaf/core/executor.py", line 125, in run

self.results = map(self._run_on_asset, self.assets)


 "/home/ubuntu/VMAF/vmaf/python/src/vmaf/core/quality_runner.py", line 309, in _run_on_asset

vmaf_fassembler.run()


 "/home/ubuntu/VMAF/vmaf/python/src/vmaf/core/feature_assembler.py", line 83, in run

runner.run(parallelize=self.parallelize)


 "/home/ubuntu/VMAF/vmaf/python/src/vmaf/core/executor.py", line 125, in run

self.results = map(self._run_on_asset, self.assets)


 "/home/ubuntu/VMAF/vmaf/python/src/vmaf/core/executor.py", line 332, in _run_on_asset

result = self._post_process_result(result)


 "/home/ubuntu/VMAF/vmaf/python/src/vmaf/core/feature_extractor.py", line 185, in _post_process_result

/ np.array(result.result_dict[vif_den_scale0_scores_key]))
TypeError: unsupported operand type(s) for /: 'NoneType' and 'float'
Traceback (most recent call last):


 "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1639, in full_dispatch_request

rv = self.dispatch_request()


 "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1625, in dispatch_request

return self.view_functions[rule.endpoint](**req.view_args)


 "/usr/local/lib/python2.7/dist-packages/flask_restful/__init__.py", line 477, in wrapper

resp = resource(*args, **kwargs)


 "/usr/local/lib/python2.7/dist-packages/flask_login/utils.py", line 228, in decorated_view

return func(*args, **kwargs)


 "/usr/local/lib/python2.7/dist-packages/flask/views.py", line 84, in view

return self.dispatch_request(*args, **kwargs)


 "/app/redash/handlers/base.py", line 27, in dispatch_request

return super(BaseResource, self).dispatch_request(*args, **kwargs)


 "/usr/local/lib/python2.7/dist-packages/flask_restful/__init__.py", line 587, in dispatch_request

resp = meth(*args, **kwargs)


 "/app/redash/handlers/dashboards.py", line 184, in get

return serializers.public_dashboard(dashboard)


 "/app/redash/serializers.py", line 54, in public_dashboard

dashboard_dict['widgets'] = [public_widget(w) for w in widget_list]


 "/app/redash/serializers.py", line 23, in public_widget

query_data = models.QueryResult.query.get(widget.visualization.query_rel.latest_query_data_id).to_dict()


 "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 831, in get

return self._get_impl(ident, loading.load_on_ident)


 "/usr/local/lib/python2.7/dist-packages/sqlalchemy/orm/query.py", line 842, in _get_impl

if len(ident) != len(mapper.primary_key):
TypeError: object of type 'NoneType' has no len()
