Mac下装xampp修改根目录遭遇error403

老师好，由于计算机更新，本人换了一台mac笔记本，然后装了xampp7.0.2，打算更改根目录，但是始终出现error403Access forbidden! You don't have permission to access the requested directory. There is either no index document or the directory is read-protected. 查询各种解决方法，如更改vhost配置，更改权限为Allow from all 甚至是httpd.conf内的user group也尝试过 始终显示error403,请问如何解决