Update app.py

app.py

@@ -8,9 +8,9 @@ app = FastAPI(title="GoFile Downloader API")
 
 @app.get("/download")
 def download_endpoint(
+    background_tasks: BackgroundTasks,                     # ← di chuyển lên đầu
     url: str = Query(..., description="Link GoFile: https://gofile.io/d/xxxx"),
     password: str | None = Query(None, description="Password nếu có"),
-    background_tasks: BackgroundTasks,
 ):
     if not url.startswith("https://gofile.io/d/"):
         raise HTTPException(400, "URL phải là link GoFile hợp lệ")