@Marvin

Traceback (most recent call last):
  File "packages/prefect/task_engine.py", line 1327, in run_context
    yield self
  File "packages/prefect/task_engine.py", line 1404, in run_task_async
    await engine.call_task_fn(txn)
  File "packages/prefect/task_engine.py", line 1347, in call_task_fn
    async with aconcurrency(list(self.task_run.tags), self.task_run.id):
               ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/users/riyasinh/.local/share/uv/python/cpython-3.13.1-linux-x86_64-gnu/lib/python3.13/contextlib.py", line 235, in __aexit__
    await self.gen.athrow(value)
  File "packages/prefect/concurrency/v1/asyncio.py", line 83, in concurrency
    await release_slots
  File "packages/prefect/utilities/asyncutils.py", line 343, in ctx_call
    result = await async_fn(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "packages/prefect/concurrency/v1/_asyncio.py", line 48, in release_concurrency_slots
    async with get_client() as client:
               ~~~~~~~~~~^^
  File "packages/prefect/client/orchestration/__init__.py", line 1436, in __aenter__
    raise RuntimeError(
    ...<2 lines>...
    )
RuntimeError: The client cannot be started again after closing. Retrieve a new client with `get_client()` instead.

The error you're encountering,

RuntimeError: The client cannot be started again after closing. Retrieve a new client with get_client() instead

, indicates that the client instance is being reused after it has been closed. This is a common issue when using asynchronous context managers in Prefect. To resolve this, ensure that you're retrieving a new client each time you need one by calling

get_client()

again. Here's a basic example of how you might structure your code to avoid this error:

python
from prefect.client.orchestration import get_client

async def some_async_function():
    async with get_client() as client:
        # Perform operations with the client here
        pass

You should ensure that you are not trying to reuse the

client

object outside of the

async with

block. Each time you need to perform operations with the client, fetch a new one using

get_client()

. For more detailed guidance on concurrency management and client usage, you might find this Prefect concurrency documentation helpful. It discusses using concurrency and rate limits, which might be related to your issue if you're managing multiple tasks or flows concurrently.