Traceback (most recent call last):
  File "<stdin>", line 12, in <module>
  File "/Users/will/Development/neuron-technologies/foundation/el/tools/evidence/report.py", line 35, in load
    art = os.path.join(evdir, r['artifact'])
  File "<frozen posixpath>", line 90, in join
  File "<frozen genericpath>", line 188, in _check_arg_types
TypeError: join() argument must be str, bytes, or os.PathLike object, not 'NoneType'