Unable to play cue files in Foobar2000

Does anyone here know when I import a cue file (that is placed in a folder along with a single flac file) why I am unable to play cue files in Foobar2000?
I always split the cue file into mutiple tracks since I have always prefered that, but recently I keep getting more of these index?? errors.

Right now I’m trying to open the cue file for The Master’s 😉 ‘The Shadow’, but I keep getting this window in Foobar which says ‘playback error’:

Unable to open item for playback (Object not found):
"D:\Music\Music Backup\Jerry Goldsmith\The Shadow\The Shadow\Disc 1\Jerry Goldsmith – The Shadow (Disc 1).cue" / index: 1

Unable to open item for playback (Object not found):
"D:\Music\Music Backup\Jerry Goldsmith\The Shadow\The Shadow\Disc 1\Jerry Goldsmith – The Shadow (Disc 1).cue" / index: 2

Unable to open item for playback (Object not found):
"D:\Music\Music Backup\Jerry Goldsmith\The Shadow\The Shadow\Disc 1\Jerry Goldsmith – The Shadow (Disc 1).cue" / index: 3

Unable to open item for playback (Object not found):
"D:\Music\Music Backup\Jerry Goldsmith\The Shadow\The Shadow\Disc 1\Jerry Goldsmith – The Shadow (Disc 1).cue" / index: 4

I already looked for this problem on the web, but can’t seem to find a single solution that might help.
If anyone could help, it would be greatly appriciated! 🙂

Bad pregap info (INDEX 00) and mis-ordered lines commonly need fixing as well.

https://en.wikipedia.org/wiki/Cue_sheet_(computing)#Cue_sheet_syntax