wx.previewMedia({
      sources: [{url:'https://hollyxm.oss-cn-beijing.aliyuncs.com/N000000016604/xcx-be3d133b-0b78-2e19-1c3c-039614a251f7.mov', type:'video', poster:'https://hollyxm.oss-cn-beijing.aliyuncs.com/N000000016604/xcx-be3d133b-0b78-2e19-1c3c-039614a251f7.jpg'}],
      fail:function(e){
        console.log('fail')
        console.log(e)
      },
      current:0,
      success:function(){
        console.log('success')
      },
      complete:function(){
        console.log('complete')
      }
    })

上面代码，在微信里面正常，但在 iOS 企业微信版本号：3.1.3(61175) 报错

错误信息：errMsg: "previewMedia:fail function not exist"