As explained in the terms of this forum, here you can only find help for the official Gatling components, not third party plugins. I recommend that you directly reach out to the authors of the third party plugin you’re using, probably on GitHub.
And if you encounter issue with plain Gatling, I suggest you to open another topic (as this one is connoted through your first post with kafka) with your use case, what you tried, a sample code, what you expected as the result, and the result you actually get.