Thumbnail as ablum art is not working

[NiklasEsser]

Describe the bug
The preference 'Set the video's thumnail as album art (for mp3 only)' doesn't work correctly.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://github.com/moshfeu/y2mp3/releases/tag/v2.5.4'

2. Click on 'y2mp3.Setup.2.5.4.exe'

3. Start the download

4. Execute/Double-Click the program 'y2mp3.Setup.2.5.4.exe'

5. Wait until the installation has completed

6. Start 'y2mp3.exe' (only if not automatically after step 5)

7. (Install FFMpeg if not already done)

8. Set the preferences like this (expect 'Downloads folder')
   

9. Copy this example Youtube URL 'https://www.youtube.com/watch?v=WyTFU-BHO2g'

10. Youtube URL should be auto pasted

11. Start the search

12. Click on 'DOWNLOAD' or 'DOWNLOAD ALL (1)'

13. Go to your 'Downloads folder' path

14. Open the example mp3 file 'Nightcore - Ocean Eyes - (Lyrics).mp3' with an application that the album art shows (my example is the 'Windows Media Player')

15. See error

Expected behavior
This black square as ablum art.

[moshfeu]

I'll look on it asap.