Circular Reference in Texture Stack [HELP!]

I’m new to forums, this is my first time about forums.

I’m 2 months of using blender, and I’m creating a weapon for Dota 2. For Workshop.
And as I trying to bake it to NORMALS , an error appears " !Circular Reference in Texture Stack " .
I was searching for the answer but — it didn’t worked. :frowning:

I NEED HELP. :frowning:
These files are .blend and .smd .

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