Fix: Use pure ASGI middleware to avoid Content-Length issues

app.py

@@ -593,6 +593,7 @@ with gr.Blocks(
                 original_app = gradio_app.app
                 gradio_app.app = FastAPIRouteMiddleware(original_app)
                 print("FastAPI routes mounted successfully via pure ASGI middleware")
+                # Pure ASGI middleware avoids Content-Length issues with BaseHTTPMiddleware
             except Exception as middleware_error:
                 # Fallback: try to add routes directly to router
                 print(f"Middleware approach failed: {middleware_error}, trying direct route addition...")