Topaz 2.0.3 is creating a "shadow"

I start Topaz AI 2.0.3 (Windows) from Lightroom Classic (Windows).
After Topaz AI sharpens the picture, I can save it back to Lightroom as dng-file.
Unfortunately this new dng file may include some kind of a shadow!

image

Great photo! It looks like you’re applying a mask in LR before importing to Photo AI, which isn’t supported. Please import to Photo AI using the plugin first, make the Photo AI adjustments, and import back to LR before creating the mask or making any other subjective edits.

This will give you a higher quality foundation to work on as well and reduce artifacts like the shadow.