Fix Minecraft textures transparent?

Mi
- in Textures
2

I started making my own texture packs in Minecraft. But somehow my sword is transparent on the side. I've already watched a lot of videos on YT to fix that. Unfortunately, none of them worked.

Fix Minecraft textures transparent
Hu

So for me the edge is not transparent

ch

I don't quite know what you're seeing, but it doesn't look transparent to me, not in the least.