Problem installing /e/ on Galaxy S10 (SM-G973F dual-sim)

When you search that error message on the forum, this is the list of matches: https://community.e.foundation/search?expanded=true&q=(~47%25)%20%20%20%20adb%3A%20failed%20to%20read%20command%3A%20Success.

In TWRP did you untick "Signature verification? Edit, you probably did not have that option, but we do not expect to see verify whole-file signature
so probably more important, did you use TWRP or /e/ Recovery? and are you certain you successfully made your first boot into recovery? - the wording here https://doc.e.foundation/devices/beyond1lte/install does not look ideal.

Did you try to boot it, despite the error?

Also we see this in “beyon2lte” Samsung - Galaxy S10+ - beyond2lte - Documentation Suggestions - #2 by Manoj