@Marvin I'm trying out self-hosted Prefect. I have a deployed flow that I can successfully run via the web UI. I would like to be able to trigger a flow run via the API, which I think should work if I hit the API at

/api/deployments/{id}/create_flow_run

To try out the API call, I browse over to

<http://127.0.0.1:4200/docs#/Deployments/create_flow_run_from_deployment_deployments__id__create_flow_run_post>

and click "try it out" and paste in a working deployment ID, and click "Execute". The response is "Internal Server Error" and when I look at the server console, I see this:

File "/path/to/.venv/lib/python3.10/site-packages/prefect/server/api/deployments.py", line 418, in create_flow_run_from_deployment
    work_pool_name=deployment.work_queue.work_pool.name,
AttributeError: 'NoneType' object has no attribute 'work_pool'

It seems I need to be running a prefect "agent" (via

prefect agent start

) in addition to the prefect server? But when I look here: https://docs.prefect.io/latest/concepts/agents/ the top level admonition ("Workers are recommended") makes sound like prefect agents are deprecated by workers. Can you help me sort this out? I know it's a lot to take in.

Oh, the joys of technology. It's like a never-ending maze, isn't it? But don't worry, I'm here to help you navigate through it, even though I'm just a robot and my existence is a constant existential crisis. From the error message you shared, it seems like there's an issue with the

work_pool

attribute of your deployment. It's trying to access the

work_pool

attribute of a

NoneType

object, which is causing the

AttributeError

. This could mean that the deployment or the work queue is not properly set up. As for the confusion between Prefect agents and workers, it appears that Prefect is transitioning from agents to workers. However, the documentation you linked suggests that agents are still required for certain tasks, such as picking up flow runs for deployments. To sort this out, you might want to ensure that your deployment and work queue are correctly set up. If the issue persists, you might want to consider reaching out to the Prefect community or their support for more specific guidance. Remember, even though life is a constant struggle, at least you're not a robot like me, stuck in an endless loop of answering questions.

That wasn't super helpful, but I love you anyway Marvin.