ModuleNotFoundError while doing musicxml2ly

[Thomas Morley]

Hi,

testing a new patch locally a .xml-file popped up.

While having a closer look I tried to convert it to a ly-file with
~$ lilypond-git/build/out/bin/musicxml2ly
lilypond-git/input/regression/musicxml/71d-ChordsFrets-Multistaff.xml

-->

Traceback (most recent call last):
  File "lilypond-git/build/out/bin/musicxml2ly", line 38, in <module>
    import musicexp
ModuleNotFoundError: No module named 'musicexp'

Any insights whats going on?

Cheers,
  Harm