500 Internal Server Error when use AsyncInferenceClient

Models
1

when I use AsyncInferenceClient,sometimes I recived 500 500 Internal Server Error like this:
aiohttp.client_exceptions.ClientResponseError: 500, message='', url='/static-proxy?url=https%3A%2F%2Fapi-inference.huggingface.co%2Fmodels%2FShakker-Labs%2FFLUX.1-dev-LoRA-One-Click-Creative-Template' .
My code just like this:

from huggingface_hub import AsyncInferenceClient

API_URL = "/static-proxy?url=https%3A%2F%2Fapi-inference.huggingface.co%2Fmodels%2FShakker-Labs%2FFLUX.1-dev-LoRA-One-Click-Creative-Template"
headers = {
    "Authorization": "Bearer hf_xxxxxxx",
    "x-use-cache": "false"
}

def query(payload):
    response = requests.post(API_URL, headers=headers, json=payload)
    return response.content

image_bytes = query({
  "inputs": "Astronaut riding a horse",
  "parameters": {
      "width": 512,
      "height": 512
  }
})
print(image_bytes)
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