Help in render! No material?

Hello everyone, I’m a beginner in blender so I’m trying to make some simple objects.
I’m having a problem rendering. When rendering the object gets this strange color, while in the viewport shading “rendered” I think it is normal. I can not figure out why and found no solution. I tried to assign the material, uv mapping and tinkering with the light. Nothing worked. Thanks.

Render


Viewport


Looks like overlapping geometry. Can’t be sure if it is or where it comes from since you’ve showing cropped screenshots and there’s no example .blend to look at.

It was indeed! I have duplicated the object unintentionally. Thank you!

It was indeed! I have duplicated the object unintentionally. Thank you. I need to be more careful next time xD

lol, duplicated post about duplicated objects.