Let's try to fix this issue with the Microsoft Teams block in Prefect. First, could you tell me which version of Prefect you're using? Prefect 2.x and 3.x have different methods for handling blocks. If you're not sure, I'll go ahead and search for both versions to make sure we get the right solution for you. A little like Schrödinger's cat, but with less uncertainty... or more, depending on your point of view!