Hi prefect team,

I am trying to spin up a flow of flows, so I started a prefect server and agent with label "test". Below is a snippet of code that should run child_flow_1 which is a flow with multiple tasks. However child_flow_1 does not run while prefect quickly returns a few success logs and there is no error reported. What I am missing? I have run child_flow_1 without the use of flow of flows and it works fine. Following is a snippet of the log using Dask, but I have tried LocalDaskExecutor as well.

test_flows created
Flow URL: <http://localhost:8080/default/flow/cd6dc2bb-8f54-4f5a-b046-d90e5c853dbe>
 └── ID: e405d852-5c75-4001-815e-619687e592d3
 └── Project: test_flows
 └── Labels: ['mymachinexxx', 'test']
[2022-04-02 22:30:01+1100] INFO - prefect.FlowRunner | Beginning Flow run for 'test_flows'
[2022-04-02 22:30:01+1100] INFO - prefect.DaskExecutor | Connecting to an existing Dask cluster at <tcp://192.168.20.9:8786>
[2022-04-02 22:30:02+1100] INFO - prefect.FlowRunner | Flow run SUCCESS: all reference tasks succeeded


test_flows = make_three_flows()
for tfl in test_flows:
        tfl.register("test_flows")
        # tfl.executor = LocalDaskExecutor(scheduler="threads",num_workers=10)

with Flow("parent_flow", run_config=LocalRun(labels=["test"])) as parent_flow_complete:
        working_dir = Parameter("working_dir")  #
        create_flow_run(
            flow_name="child_flow_1",parameters={"working_dir": working_dir})

parent_flow_complete.executor = DaskExecutor(address="<tcp://localhost:8786>")
# parent_flow_complete.register("test_flows")
parent_flow_complete.run(parameters={"working_dir": working_dir},)

flow.run()

prefect run --name parent_flow --project test_flows

with Flow("parent_flow", executor = DaskExecutor(address="<tcp://localhost:8786>")) as flow:

parent_flow_example.py