This model is composed of a total of 9 objects. It is rigged with its controllers and has only 4 expressions: eyes open and closed, and mouth open and closed

It is likely that the eyes and mouth will appear purple. Just go to the top where it says Shading, then go to the top right, click the arrow next to the Armature, and select Eyes. Some nodes will appear.

Click on the orange node called Image Texture, then click on the folder icon and select both the open eye and the closed eye textures. That’s it.

For the mouth, repeat the same process