No Shapely geometry can be created from null value

Bom dia:

Estou com o mesmo problema do colega André (relatado aqui).

Após trocar o crs do dataframe:

setor_m = setor_m.to_crs({'init': 'epsg:4326'})

o agrupamento pelo bairro dá o mesmo erro:

bairro = setor_m.dissolve(by='NM_BAIRRO', aggfunc='sum')

TopologyException: Input geom 0 is invalid: Self-intersection at or near point -43.250213293714594 -22.887739582871898 at -43.250213293714594 -22.887739582871898
TopologyException: Input geom 0 is invalid: Self-intersection at or near point -43.250213293714594 -22.887739582871898 at -43.250213293714594 -22.887739582871898
TopologyException: Input geom 0 is invalid: Self-intersection at or near point -43.250213293714594 -22.887739582871898 at -43.250213293714594 -22.887739582871898
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/pandas/core/groupby/ops.py in agg_series(self, obj, func)
    662         try:
--> 663             return self._aggregate_series_fast(obj, func)
    664         except Exception:

22 frames
pandas/_libs/reduction.pyx in pandas._libs.reduction.SeriesGrouper.get_result()

pandas/_libs/reduction.pyx in pandas._libs.reduction.SeriesGrouper.get_result()

ValueError: No Shapely geometry can be created from null value

During handling of the above exception, another exception occurred:

ValueError                                Traceback (most recent call last)
ValueError: No Shapely geometry can be created from null value

During handling of the above exception, another exception occurred:

ValueError                                Traceback (most recent call last)
/usr/local/lib/python3.6/dist-packages/shapely/geometry/base.py in geom_factory(g, parent)
     74     # Abstract geometry factory for use with topological methods below
     75     if not g:
---> 76         raise ValueError("No Shapely geometry can be created from null value")
     77     ob = BaseGeometry()
     78     geom_type = geometry_type_name(g)

ValueError: No Shapely geometry can be created from null value

Alguma sugestão para corrigir isto? Obrigado.