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Hi, is it possible to use `prefect.engine.flow_runner.FlowRunner` or `prefect.engine.cloud.flow_runner.CloudFlowRunner` with a prefect server backend? I am wanting to run a flow and get task results so wanting to use the arg  `return_tasks=[task1,task2]` . But I don't think I can do this with `prefect.Client().create_flow_run(version_group_id="redacted")` ?

Hi <@U01JQTGP732> - you should be able to use `CloudFlowRunner` for this; `CloudFlowRunner` existed before Prefect Server was a concept and so alludes to any Prefect API, rather than the Prefect Cloud product.

As for results, take a look at the <https://docs.prefect.io/core/concepts/results.html#result-objects|Results docs> - they detail how you can create results with any of our results classes inside of tasks, without having to interact directly with the FlowRunner.

<@UN6FTLFAS> ah ok thank you! I must have something set wrong in my config.toml file then because when I run:
```fr = CloudFlowRunner(flow=flow)
flow_state = fr.run()
flow_state.result```
I'm getting an error:
```prefect.utilities.exceptions.ClientError('400 Client Error: Bad Request for url: <http://host>:port/graphql```
(swapped out my host and port there)

That why I had stupidly assumed this class was cloud only.
I notice the url in the error is different to the one I use when successfully using `prefect.Client(<http://host>:port).register(flow)` in that it has `/graphql` added on the end... Not sure exactly where I am going wrong in the config file though.  My simpified config just to the parts that I hope are relevant:
```backend = "server"

[server]
host = "<http://host>"
port = "port"
host_port = "{server.port}"
endpoint = "${server.host}:${server.port}"

[cloud]
    api = "${${backend}.endpoint}"
    graphql = "${cloud.api}/graphql"```
Any ideas?!

Hm, it looks like the `CloudFlowRunner` doesn't pass any arguments to the Client it creates, meaning the Client will take the endpoint directly from `config.cloud.graphql` - try changing that in your config to your server endpoint.

(with `/graphql` at the end, most likely)

The flow runners aren't really public api - when running with a backend (e.g. Server/Cloud) you should let prefect setup and run the flow for you. If you want to view the results you'll want to set up `Result` objects (which will write the outputs out elsewhere) and view them later. The only supported public api for running a flow locally in a script (and then interacting with the results) is `flow.run()`.

Hmmm ok so I think `prefect.tasks.prefect.StartFlowRun` might be what I am after then for running/chaining flows. But that doesnt help me to get task results. Sounds like I need to do some more reading around the `Result` objects....! Thank you both