Is your feature request related to a problem? Please describe.
Thanks for the great tutorial in Youtube: https://www.youtube.com/watch?v=M3ZWfamWrBM.
The author shared several ideas "need to improve" in MONAI:

1. When the file path is wrong, MONAI doesn't say where it is wrong.
2. When the key is missing, MONAI doesn't say which transform is missing the key.
3. Need to highlight ITKReader can support DICOM and DICOM series, otherwise, users think we only support NIfTI files.
4. When some error happens in transforms, it prints all the data in the meta, it's a mess especially in multiple workers.