[BUG] Fabric API was not found

[KostaKing11]

• When I try tu use Skin feature tool it says: "The skin tool could not be enabled because: -Fabric API was not found. It is required for the skin tool to work on Fabric."
• When I saw it i downloaded Fabric API and added it to my mods. Then, I tried to use it and I got the same error.

• Minecraft version: [1.21]
• Mod Loader: [fabric]
• ETF Version [6.1.3]
• I only need Fabric API for this. I don't need it for other mods.
• Yes I did check FAQ and Discord server.

[KostaKing11]

If you need proof i have Fabric API here is proof: