Local FTP, no Local Fanart or Poster

I have all my movies on an local FTP right now and i would like to have that in the future.

I have nfo, posters and fanart in the separate movie folders, worked fine before moved to the FTP.

I have tried on my pc and on my raspbarry pi 3B with retropie and it is the same issue.

Googled for an hour but didnt find anything that worked.

Example:
Folder: 101 Dalamtiner
Files in folder:
101 Dalamtiner.avi
101 Dalamtiner.nfo
101 Dalamtiner-fanart.jpg
poster.jpg

Any one have a clue?

Tried to search in this forum, but FTP was a to short string.