No output from lcec_configgen?

I've trying to create the XML for a Amsamotion EC1A-1016R-AM6 module, but lcec_configgen appears to be doing nothing.
The command appears to be recognised, but gives no output.

ethercat slaves shows my Lichuan CL3-E57H drives and the EC1A-Core, with -v option showing all the expected values, but lcec_configgen appears to do nothing. The terminal simply goes back to the prompt with no output.

This is on 2.9.10.

Anybody have any suggestions?

Quick update.
After some suggestions from ChatGPT, lcec_configgen worked by using the full /usr/bin/lcec_configgen command.

The resultant XML doesn't work, but it's given me a starting point which I can work with.