Why is this line appearing across my procedural material? I have tried to texture an orange with the shader editor after uwrapping the object, and I got this strange trace on the mesh:



I want to make it disappear but I didn't find any issue. I have tried merge by distance but it doesn't work.

This is the link of the .blend:
Usually, its not necessary to do UV unwrap for procedural textures. Try setting the texture coordinate node to OBJECT and see if it still shows that trace.
Edit : I downloaded your Blend file, but there is no line appearing in the viewport.
Not even in the render (Cycles) :

(The light is a bit weird btw)