Starting lilypond-windows.exe 2.21.4 [Untitled]...
Processing `C:/Users/Pierre/AppData/Local/Temp/frescobaldi-8tj7w61h/tmp0qsn12pu/
document.ly'
Parsing...
Interpreting music...
Preprocessing graphical objects...
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
Converting to `document.pdf'...
C:/Program Files (x86)/LilyPond 2-21-4/usr/share/lilypond/current/scm/lily.scm:567:7: In procedure delete-file in _expression_ (delete-file dst):
C:/Program Files (x86)/LilyPond 2-21-4/usr/share/lilypond/current/scm/lily.scm:567:7: Permission denied
Exited with return code 1.