Update app.py

app.py

@@ -7,7 +7,7 @@ import os
 import gradio as gr
 import gc
 
-model_id = os.getenv("Model")
+model_id = int(os.getenv("Model"))
 
 #stabilityai/stable-diffusion-xl-base-1.0  0 - base model
 #Colossus_Project_XL                       1 - better people