Traceback (most recent call last):


 "<string>", line 1, in <module>


 "/home/pietro/nobackup/repo/pandas/pandas/core/reshape/pivot.py", line 466, in crosstab

dropna=dropna, **kwargs)


 "/home/pietro/nobackup/repo/pandas/pandas/core/frame.py", line 4462, in pivot_table

margins_name=margins_name)


 "/home/pietro/nobackup/repo/pandas/pandas/core/reshape/pivot.py", line 82, in pivot_table

agged = grouped.agg(aggfunc)


 "/home/pietro/nobackup/repo/pandas/pandas/core/groupby.py", line 4191, in aggregate

return super(DataFrameGroupBy, self).aggregate(arg, *args, **kwargs)


 "/home/pietro/nobackup/repo/pandas/pandas/core/groupby.py", line 3632, in aggregate

return self._python_agg_general(arg, *args, **kwargs)


 "/home/pietro/nobackup/repo/pandas/pandas/core/groupby.py", line 873, in _python_agg_general

return self._wrap_aggregated_output(output)


 "/home/pietro/nobackup/repo/pandas/pandas/core/groupby.py", line 4254, in _wrap_aggregated_output

agg_labels = self._obj_with_exclusions._get_axis(agg_axis)


 "pandas/_libs/properties.pyx", line 39, in pandas._libs.properties.cache_readonly.__get__ (pandas/_libs/properties.c:1604)


 "/home/pietro/nobackup/repo/pandas/pandas/core/base.py", line 235, in _obj_with_exclusions

return self.obj.drop(self.exclusions, axis=1)


 "/home/pietro/nobackup/repo/pandas/pandas/core/generic.py", line 2517, in drop

obj = obj._drop_axis(labels, axis, level=level, errors=errors)


 "/home/pietro/nobackup/repo/pandas/pandas/core/generic.py", line 2549, in _drop_axis

new_axis = axis.drop(labels, errors=errors)


 "/home/pietro/nobackup/repo/pandas/pandas/core/indexes/base.py", line 3750, in drop

labels = _index_labels_to_array(labels)


 "/home/pietro/nobackup/repo/pandas/pandas/core/common.py", line 417, in _index_labels_to_array

labels = _asarray_tuplesafe(labels)


 "/home/pietro/nobackup/repo/pandas/pandas/core/common.py", line 386, in _asarray_tuplesafe

result = np.asarray(values, dtype=dtype)


 "/home/pietro/.local/lib/python3.5/site-packages/numpy/core/numeric.py", line 531, in asarray

return array(a, dtype, copy=False, order=order)
ValueError: setting an array element with a sequence

Traceback (most recent call last):


 "/var/www/py3env/bin/daphne", line 11, in <module>

sys.exit(CommandLineInterface.entrypoint())


 "/var/www/py3env/lib/python3.6/site-packages/daphne/cli.py", line 161, in entrypoint

cls().run(sys.argv[1:])


 "/var/www/py3env/lib/python3.6/site-packages/daphne/cli.py", line 222, in run

application = import_by_path(args.application)


 "/var/www/py3env/lib/python3.6/site-packages/daphne/utils.py", line 11, in import_by_path

module_path, object_path = path.split(":", 1)
ValueError: not enough values to unpack (expected 2, got 1)
