The script php bin/console ezplatform:io:migrate-files --from=default,default --to=dfs,nfs
fails if there are no media files (no entries in the ezmedia table).

In LegacyStorageFileRowReader.php line 45: Notice: Trying to access array offset on value of type bool
This is just a notice, but the script nevertheless stops.

If I create at least one media file, the script proceeds to the Starting migration... stage, but then it shows the same notice after processing all binary files, and stops.