Warning: datedefaulttimezoneget(): It is not safe to rely on the system' s timezone settings. You are required to use the date.timezone setting or the datedefaulttimezoneset() function. In case you used any of those me thods and you are still getting this warning, you most likely misspelled th e timezone identifier. We selected the timezone 'UTC' for now, but please s et date.timezone to select your timezone. in /var/www/Symfony/vendor/monolo g/monolog/src/Monolog/Logger.php line 209
不是说的很清楚了。配一下php.ini文件,defaulttimezone吧。