HarmonyOS createAVPlayer() 后不设置url，不会调状态

import { BusinessError } from '@ohos.base'; 
let avPlayer: media.AVPlayer; 
media.createAVPlayer().then((Video: media.AVPlayer) => { 
  if (Video != null) { 
    avPlayer = Video; 
    console.info('createAVPlayer success'); 
  } else { 
    console.error('createAVPlayer fail'); 
  } 
}).catch((error: BusinessError) => { 
  console.error(`AVPlayer catchCallback, error message:${error.message}`); 
});