当php遇到这种错误，请更改php.ini文件

date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone.

根据提示，是php.ini中关于时区的设置问题。
查找一下：date.timezone = ？
如果是 ;date.timezone = ？
去掉前面的;号。=号后面的值可以设置为：PRC、Asia/Chongqing、Asia/Shanghai或Asia/Urumqi等试试。
如果是港台地区可以设置为：Asia/Macao 、Asia/Hong_Kong 或Asia/Taipei 等试试。
格式如：date.timezone搜索 = PRC