Update app.py

app.py

@@ -1286,7 +1286,7 @@ DEFAULT_WITH_MODEL_NAME = True
 
 # Singleton Upscale instance for API
 _api_upscale = Upscale()
-fastapi_app.get("/")
+@fastapi_app.get("/")
 async def root():
     """Root endpoint"""
     return {