截图黑屏，并在管理后台开发工具可见错误如下：

错误类型1

canvasToTempFilePathSync:fail:write file failed;at requestAnimationFrame callback function
Error: canvasToTempFilePathSync:fail:write file failed
at HTMLCanvasElement.s.toTempFilePathSync (https://lib/WAGame.js:2:813096)

错误类型2

canvasToTempFilePathSync:fail:runtime exception! java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap[@bebb457](/user/bebb457);at requestAnimationFrame callback function
Error: canvasToTempFilePathSync:fail:runtime exception! java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap[@bebb457](/user/bebb457)
at HTMLCanvasElement.s.toTempFilePathSync (https://lib/WAGame.js:2:813096)