Undeletable Phantom Local File

[Rides1283man]

Hi, this is my first question on Spotify Community, so sorry if any of the formats are wrong.

My problem is as follows:

I imported a local file from Mac to Android (I've done this with hundreds of files with no fail) but this time I think I imported a file with an artist name that's way too long. I think when the creator of this file made it, he/she incorporated the details of the song too, and that surpasses Spotify's limit.

What happened afterwards was that I added the song to a playlist that I often transfer files with. Mac Spotify doesn't see the file, but on the Android side it had already gotten the data and had stored a placeholder waiting to download the file. The problem was that Android can't get anything from the Mac because the Mac side doesn't even recognise the file.

Now there's a greyed out song on the Android side, but not on the Mac. I have no way of deleting it and I have already tried deleting cache and downloaded data, but nothing seems to work.

There are screenshots from both platforms attached if that helps.