Importing .OBJ files but no texture even though there is .mtl files in the same repertory.

Hi, I’m using TwinMotion education 2023 1.2 version and I’m pretty new in using TwinMotion, when I import a .obj file, there is no texture even though the .mtl file is in the same repertory. It seems we can’t import a .mtl file alone in TwinMotion, so am I missing a step in the process of importing .obj file ? When importing .las cloud point file everything works perfectly. Thank you for your help.