fixing background task issues

app.py

@@ -34,7 +34,7 @@ async def virtual_try_on(talent_trigger_word: str = Form(...),
                         bottom_garment_image: UploadFile = File(None),
                         top_back_garment_image: UploadFile = File(None), 
                         bottom_back_garment_image: UploadFile = File(None),
-                        ):
+                        background_tasks: BackgroundTasks):
     """
     Pass in the top garment image, bottom garment image, top back garment image, bottom back garment image, talent trigger word, talent lora url and number of images to generate.
     Only one front garment image is required, the rest are optional.