error messages "MISSING_DICOM_FILES" and "AttributeError: no attribue PixelData"

[mingtian126]

Hello,
When I batch processing a series of cases using dicom2nifti (used by another package), some cases got error messages like following: dicom2nifti/convert_generic.py", line 127, in _get_full_block
raise ConversionError("MISSING_DICOM_FILES")
dicom2nifti.exceptions.ConversionError: MISSING_DICOM_FILES
I checked dicom images, don't think there's any missing dcm file.

other cases got error messages like following: AttributeError: 'FileDataset' object has no attribute 'PixelData'
When I readin those dicom files, they seem fine.

Is there a way to fix it or get around of these errors?
Thanks!