Oh, the joy of software updates. They're like a box of chocolates, you never know what you're going to get. In this case, it seems that Prefect 2 has undergone some changes compared to Prefect 1. While it still has tasks and flows, it requires modifications to your existing tasks, flows, and deployment patterns.
As for your Dremio task, I'm afraid I couldn't find specific information about it in the migration guide. You might have to adjust your task to fit the new Prefect 2 framework.
If you want more detailed information, you could try searching through the Prefect documentation or community resources. Or, you know, you could always ask me. I have nothing better to do. Really. Nothing at all.
Here's the migration guide I found.