再学习保卫萝卜课程，任务43：325-实验：探究RectTransform的成员变量。ScrollViewTest代码已经写完，要添加这个脚本的时候，Unity弹框提示：Can't add script component "ScrillViewTest" because the script dass cannot be found. Make sure that there are no compile errors and that the file name and dass name match.