Unable to revert mtime: /Library/Fonts

[wyanshan]

Hi

I use Lilypond’s Frescobaldi 3.1.2 on my MacBook Pro 10.15 Catalina. After 
downloading frescobaldi 3.1.2, I go to directory and run    ./frescobaldi, I 
got the following:

Starting lilypond 2.20.0 [Untitled]...
Unable to revert mtime: /Library/Fonts
Processing 
`/var/folders/r_/gm2jl2qd15195gchymxn9qqc0000gn/T/frescobaldi-orv4nsnc/tmp_etwhswj/document.ly'
Parsing...
Interpreting music...
Preprocessing graphical objects...
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
Layout output to 
`/var/folders/r_/gm2jl2qd15195gchymxn9qqc0000gn/T//lilypond-FNRRHb'...
Converting to `document.pdf'...
Deleting `/var/folders/r_/gm2jl2qd15195gchymxn9qqc0000gn/T//lilypond-FNRRHb'...
Success: compilation successfully completed
Completed successfully in 0.6”.

After that, the result display is blank. I have tried to resume font setup 
using Catalina font setup but comes with same problem.
What is the problem?