SSTPredictor stopped when I use it to generate embedding for the structures from pdb file.

[XudongZhang-ny]

As shown in the picture, it stopped when i use:
predictor = SSTPredictor(structure_vocab_size=2048)
result = predictor.predict_from_pdb('../example_data/xxx.pdb')
to generate embedding for the pdb file.
Some pdb files worked, but some pdb files will be stuck, and whenever how long I wait for them.