HarmonyOS鸿蒙Next中JS UI组件video播放不了视频，真机显示“打开视频文件失败”

HarmonyOS鸿蒙Next中JS UI组件video播放不了视频，真机显示“打开视频文件失败”

组件示例代码如下：

<!-- xxx.hml -->
<div class="container">
<video id='videoId' src='/common/myDeram.mp4' muted='false' autoplay='false'
controls='true' onprepared='preparedCallback' onstart='startCallback'
onpaues='pauesCallback' onfinish='finishCallback' onerror='errorCallback'
onseeking='seekingCallback' onseeked='seekedCallback'
ontimeupdate='timeupdateCallback'
style="object-fit:fill; width:80%; height:400px;"
onclick="change_start_pause"></video>
</div>

/* xxx.css */
.container {
justify-content: center;
align-items: center;
}

// xxx.js
export default {
data: {
event:'',
seekingtime:'',
timeupdatetime:'',
seekedtime:'',
isStart: true,
duration: '',
},
preparedCallback:function(e){ this.event = '视频连接成功'; this.duration = e.duration;},
startCallback:function(){ this.event = '视频开始播放';},
pauseCallback:function(){ this.event = '视频暂停播放'; },
finishCallback:function(){ this.event = '视频播放结束';},
errorCallback:function(){ this.event = '视频播放错误';},
seekingCallback:function(e){ this.seekingtime = e.currenttime; },
timeupdateCallback:function(e){ this.timeupdatetime = e.currenttime;},
change_start_pause: function () {
if(this.isStart) {
this.$element('videoId').pause();
this.isStart = false;
} else {
this.$element('videoId').start();
this.isStart = true;
}
},
}