Duplicate CreativeWork

When accessing structured data tools I see two CreativeWork tags for kk star ratings. When I deactivate the plugin both tags disappear. Therefore, it is not any external plugin that is added, but the plugin itself that is duplicating.

Can you help me solve this:

See it here: https://search.google.com/structured-data/testing-tool/u/0/#url=https%3A%2F%2Fwww.secredosdosonho.com.br%2Fonse-with-cobra%2F

The page I need help with: [log in to see the link]