NotImplementedError when reading .mcif files of incommensurate structures with pymatgen

I want to use .mcif files for my own machine learning project. I downloaded mcif files as training data from MAGNDATA and tried using pymatgen to use the data as pymatgen.core.structure.Structure object. However, it shows an error when loading incommensurate structures, as I show in the attached picture. Do you know why this happens, and how to solve this issue?