Hi all! Is this correct to use prefect's secret function? By following the prefect's docs, but i got the message like this.

Traceback (most recent call last):
  File "C:\Users\user\anaconda3\lib\site-packages\prefect\client\client.py", line 551, in _send_request
    response.raise_for_status()
  File "C:\Users\user\anaconda3\lib\site-packages\requests\models.py", line 960, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 400 Client Error: Bad Request for url: <http://localhost:4200/>

This is the part of my code.

from prefect import Flow, task, resource_manager, case
from prefect.tasks.control_flow import merge
from prefect import Client
from prefect.tasks.secrets import PrefectSecret

client = Client()
client.set_secret(name="secret", value="<mysql+pymysql://wonsun>:RKSek849200!@192.168.0.13/metadata")