调用MediaContainer.export()，没有返回url或者啥的，success和fail都没生效

机型华为mate40pro

代码如下：

        const mc = wx.createMediaContainer()
        mc.extractDataSource({
            source: ts.data.currentVidUrl,
            success(r1){
                console.log(r1)
                mc.removeTrack(r1.tracks[0])
                mc.export({
                    success: (res) => {
                        // 拿到导出之后的视频
                        console.log("导出视频：", res.tempFilePath);
                        mc.destroy();
                    },
                    fail: (res) => {
                        console.log("导出失败");
                        mc.destroy();
                    }
                })
                console.log(mc)
            },
            fail(r1){
                console.log("extractDataSource fail")
                console.log(r1)
                mc.destroy();
            }
        })