SOLVED: I can't get the artist section to populate

[Peu]

Firstly, I want to apologize in advance for any mistake I might do, it's my first time writing in a forum.
I have searched this forum as well as Reddit and google for this issue, but did not find a solution and finally decided to ask myself.

I have been using Jellyfin for a while for movies and had no issue there, but this week I decided to use it for my audio as well, so I look at the wiki and saw that I had to organize the media in the format

Music
├── Some Artist
│  ├── Album A
│  │  ├── Song 1.flac
│  │  ├── Song 2.flac
│  │  └── Song 3.flac
│  └── Album B
│      ├── Track 1.m4a
│      ├── Track 2.m4a
│      └── Track 3.m4a
└── Album X
    ├── Whatever You.mp3
    ├── Like To.mp3
    ├── Name Your.mp3
    └── Music Files.mp3

in my case, I did it as follows
Music
├── 'Extremo Duro'
│  ├── 'Yo Minoría Absoluta'
│  │  ├── Song 1.wav
│  │  ├── Song 2.wav
│  │  └── Song 3.wav

etcetera

the albums and songs appeared in the UI and I can play them fine, it's not completely fetching the metadata even if I manually identify the album from the UI button and finds a MusicBrainz entry that has more information such as the year or genre, but that does not bother me too much as I can manually enter those.
The problem resides in that the Artists and Album Artists sections are completely empty