Lua/Wireshark: No module named 'pymavlink.tools'

I'm trying to generate a Lua dissector for Wireshark.

Following the instructions on https://github.com/ArduPilot/pymavlink/blob/c18db673f0214b683bc330587bc11ce2818a8e8d/generator/mavgen_wlua.py#L9

I get this error
`ModuleNotFoundError: No module named 'pymavlink.tools'`

I know that a partial solution could be the one proposed at https://github.com/ArduPilot/pymavlink/issues/133 but how can I solve this issue?

Start with generator/mavgen_wlua.py and reproduce the documented Lua dissector generation command. Compare the import path with the package layout and the partial solution discussed in issue 133. Done means the documented command runs without ModuleNotFoundError and produces the expected Wireshark Lua dissector.

Written by the indexing model from the issue text.