python code error

[Ha0Tang]

FILE NAME: 000000000139.png
Traceback (most recent call last):
File "OpenShapes.py", line 27, in
EXEMPLAR_MATCHES = context.get_exemplars(LABEL_MAP)
File "./OpenShapes/python/experiments/context.py", line 94, in get_exemplars
exemplar_scores = self.get_exemplar_scores(LABEL_MAP, exemplar_matches)
File "./OpenShapes/python/experiments/context.py", line 67, in get_exemplar_scores
self.CACHE_EXEMPLAR_PATH + EXEMPLARS_LIST[n])
TypeError: can only concatenate str (not "numpy.bytes_") to str