ModuleNotFoundError: No module named 'circuit_training'

[mi-ye]

When running the following command:
python -m Plc_client.plc_client_os_test --netlist ./Plc_client/test/ariane/netlist.pb.txt
--plc ./Plc_client/test/ariane/initial.plc
--width 356.592
--height 356.640
--col 35
--row 33
--rpmh 10
--rpmv 10
--marh 5
--marv 5
--smooth 2
I encountered the following error:
ModuleNotFoundError: No module named 'circuit_training'
What could be the reason for this error?