【报Bug】音频在ios上循环播放

在ios上循环播放，安卓只播放一次，并且报以下错误
[ERROR] : appServiceSDKScriptError
15:38:46.863 Can't find variable: nan;at api onAudioStateChange callback function
15:38:46.863 eval code
15:38:46.864 eval@[native code]
15:38:46.864 execSync
15:38:46.864 execSync2
15:38:46.864 getDuration
15:38:46.864 getAudioState@app-service.js:3:75645
15:38:46.865 Un@app-service.js:3:77415
15:38:46.865 app-service.js:4:844
15:38:46.865 invoke@app-service.js:4:889
15:38:46.865 invoke@app-service.js:4:105643
15:38:46.865 X@app-service.js:4:163217
15:38:46.866 app-service.js:4:170670
15:38:46.866 hc@app-service.js:4:310445
15:38:46.866 app-service.js:4:311579
15:38:46.866 app-service.js:4:164893
15:38:46.866 subscribeHandler@app-service.js:4:1563
15:38:46.866 P@app-service.js:3:5118
15:38:46.867 callbackFromNative
15:38:46.867 nativeEval
15:38:46.867 global code