热更新下载maifest文件失败

Creator 2.x
#1

通过jsb.AssetsManager热更新，下载manifest的时候提示验证失败。应该怎么做啊。
Asset update error: assets/main/native/5f/5f45f634-09a5-4b5c-908b-5cf42e0ce765.manifest, Asset file verification failed after downloaded