There is something wrong

[zichuan-liu]

when I run
python src/main.py --config=qmix --env-config=sc2 with env_args.map_name=3m

Traceback (most recent call last):
File "src/main.py", line 19, in
ex = Experiment("pymarl")
File "/home/XXXXXX/miniconda3/envs/mycollq/lib/python3.7/site-packages/sacred/experiment.py", line 75, in init
_caller_globals=caller_globals)
File "/home/XXXXXX/miniconda3/envs/mycollq/lib/python3.7/site-packages/sacred/ingredient.py", line 57, in init
gather_sources_and_dependencies(_caller_globals)
File "/home/XXXXXX/miniconda3/envs/mycollq/lib/python3.7/site-packages/sacred/dependencies.py", line 487, in gather_sources_and_dependencies
sources = gather_sources(globs, experiment_path)
File "/home/XXXXXX/miniconda3/envs/mycollq/lib/python3.7/site-packages/sacred/dependencies.py", line 440, in get_sources_from_imported_modules
return get_sources_from_modules(iterate_imported_modules(globs), base_path)
File "/home/XXXXXX/miniconda3/envs/mycollq/lib/python3.7/site-packages/sacred/dependencies.py", line 409, in get_sources_from_modules
filename = os.path.abspath(mod.file)
File "/home/XXXXXX/miniconda3/envs/mycollq/lib/python3.7/posixpath.py", line 378, in abspath
path = os.fspath(path)
TypeError: expected str, bytes or os.PathLike object, not NoneType