我很抱歉我的英语不好。我的问题在项目外部不运行构建。错误 =Exception: null. The flutter tool cannot access the file or directory. Please ensure that the SDK and/or project is installed in a location that has read/write permissions for the current user.
项目拥有所有权限“android flutter sdk”
但再次构建错误
帮我！