pasé api key dentro de a función

app.py

@@ -2,12 +2,12 @@ import os
 import gradio as gr
 from gradio_client import Client
 
-api_key = os.getenv('HF_API_KEY')
 
 
 def predict(prompt):
     custom_model = "lichorosario/dott_remastered_style_lora_sdxl"
     weight_name = "dott_style.safetensors"
+    api_key = os.getenv('HF_API_KEY')
     client = Client("fffiloni/sd-xl-custom-model", api_key=api_key)
     
     # Load the model