[SymfonyComponentDebugExceptionContextErrorException]
Warning: date_default_timezone_get(): 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 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.
修改php.ini文件，找到date = utc 就可以了
date.timezone = utc