TypeError: object of type 'NoneType' has no len(

[AJue3101]

Hi Everyone,

i get this error running add_recipe_2016()

Adding OzoneFormationEcosystems
Adding HumanCarcinogenicToxicity
Adding LandOccupation
Adding FreshwaterEutrophication
Adding MarineEutrophication
Adding OzoneFormationHumans
Adding LandTransformation

TypeError Traceback (most recent call last)
Input In [7], in
----> 1 add_recipe_2016()

File ~\miniconda3\envs\MENA-Fuels\lib\site-packages\bw_recipe_2016_init_.py:112, in add_recipe_2016(version)
110 print("Adding {}".format(c.name))
111 category = c(data[i], biosphere, version)
--> 112 category.apply_strategies(verbose=False)
113 try:
114 category.drop_unlinked(verbose=False)

File ~\miniconda3\envs\MENA-Fuels\lib\site-packages\bw2io\importers\base.py:69, in ImportBase.apply_strategies(self, strategies, verbose)
67 total = len(func_list)
68 for i, func in enumerate(func_list):
---> 69 self.apply_strategy(func, verbose)
70 if hasattr(self, "signal") and hasattr(self.signal, "emit"):
71 self.signal.emit(i + 1, total)

File ~\miniconda3\envs\MENA-Fuels\lib\site-packages\bw2io\importers\base.py:48, in ImportBase.apply_strategy(self, strategy, verbose)
46 print("Applying strategy: {}".format(func_name))
47 try:
---> 48 self.data = strategy(self.data)
49 self.applied_strategies.append(func_name)
50 except StrategyError as err:

File ~\miniconda3\envs\MENA-Fuels\lib\site-packages\bw_recipe_2016\strategies\matching.py:81, in match_multiple(data, other)
78 if cf["name"].lower() in other_dict:
79 to_remove.append(cf)
80 to_add.extend(
---> 81 [
82 add_flow(deepcopy(cf), ds)
83 for ds in other_dict[cf["name"].lower()]
84 if category_match(ds, cf)
85 ]
86 )
87 else:
88 for synonym in cf.get("synonyms", []):

File ~\miniconda3\envs\MENA-Fuels\lib\site-packages\bw_recipe_2016\strategies\matching.py:84, in (.0)
78 if cf["name"].lower() in other_dict:
79 to_remove.append(cf)
80 to_add.extend(
81 [
82 add_flow(deepcopy(cf), ds)
83 for ds in other_dict[cf["name"].lower()]
---> 84 if category_match(ds, cf)
85 ]
86 )
87 else:
88 for synonym in cf.get("synonyms", []):

File ~\miniconda3\envs\MENA-Fuels\lib\site-packages\bw_recipe_2016\strategies\matching.py:42, in category_match(a, b)
38 def category_match(a, b):
39 """Return bool, whether the starting categories in a match the categories in b.
40
41 For example, category_match({'categories': ('foo',)}, {"categories": ('foo', 'bar')}) is true."""
---> 42 return tuple(a["categories"][: len(b["categories"])]) == tuple(b["categories"])

TypeError: object of type 'NoneType' has no len()