PCD upload requires SDK
https://diffgram.readme.io/docs/3d-lidar-annotation-guide#pre-requisites

On UI, it should not allow user to progress for this file type, e.g. not add as element on this list and not continue from this screen/:

Otherwise this error "app.d4bfe25e850969a58038.js:189 You can't upload files of this type."
Looks funny:

It appears to already be set in drop zone. May be if the list on right side was changed to be separately managed: