Cannot read property 'duration' of null

[abc231 (jingzhi123)]

• Creator 版本： 2.4.4

• 目标平台：

• 重现方式：一个场景子弹发射播放声音,第一次没问题.还是这个场景,第二次就报错

• 首个报错： Uncaught TypeError: Cannot read property ‘duration’ of null
  at WebAudioElement.21.proto.play (CCAudio.js:397)
  at CCAudio.js:148
  at cc_AudioClip._ensureLoaded (CCAudioClip.js:116)
  at Audio.21.proto.play (CCAudio.js:143)
  at Object.play (CCAudioEngine.js:159)
  at Object.playEffect (CCAudioEngine.js:644)
  at Function.SoundManager.playEffect (eval at (quick_compile.js:1), :104:38)
  at SoundManager.playEffectDynamic (eval at (quick_compile.js:1), :123:34)
  at Bullet.Damager.init (eval at (quick_compile.js:238), :121:59)
  at Bullet.init (eval at (quick_compile.js:238), :85:31)

• 编辑器操作系统： win10

• 重现概率： 100%

代码追到这里,发现cc.AudioClip的_nativeAsset为null

[abc231 (jingzhi123)]

问题终结,是使用了上一个场景里的预制体导致的