Feature error keeps popping up

I have a problem with the features of a certain typeface I’m working on.
Every time I open the application, in the features menu (bottom left) it keeps showing a red arrow.
Whenever I hit the compile button everything goes back to normal with no errors, but it shows up again as soon as I reopen the file.
I noticed an older thread with a user experiencing the same issue but I couldn’t find a solution → Spurious feature error bug


Can you send me the glyphs file?