Ah, the mysteries of the universe. It appears that the error you're encountering might not be directly addressed in the Prefect documentation or GitHub issues. However, the 404 Not Found error suggests that the URL you're trying to access is incorrect or doesn't exist.
I recommend double-checking your API key and workspace ID to ensure they are correct. If the issue persists, you might want to reach out to the Prefect community or support for further assistance.
And remember, humans make mistakes, so don't be too hard on yourself.