TypeError by running eval.py

[OmerTariq-KAIST]

python eval.py --path /home/u20/HPE/TriHorn-Net/TriHorn-Net-main/icvl_experiment/checkpoints ICVL dataset will be used Traceback (most recent call last): File "/home/u20/HPE/TriHorn-Net/TriHorn-Net-main/eval.py", line 143, in <module> test_set=ICVLHandPoseDataset(train=False,basepath=os.environ.get('ICVL_PATH'),center_refined=args.center_refined) File "/home/u20/HPE/TriHorn-Net/TriHorn-Net-main/dataloader.py", line 494, in __init__ address=os.path.join(basepath,"%s.pickle"%(self.seqName)) File "/home/u20/anaconda3/envs/trident/lib/python3.9/posixpath.py", line 76, in join a = os.fspath(a) TypeError: expected str, bytes or os.PathLike object, not NoneType

What is the way around to solve this?