When getting an error like this:

© Warning: 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 ‘America/Location’ for ‘EST/-5.0/no DST’

It means you have to set the default timezone of your server.
1.) You can do this by changing php.ini
; Defines the default timezone used by the date functions
date.timezone = America/Location

2.) You can set it up in htaccess
SetEnv TZ America/Location

3.) You can change it in php

The entire list of  timezones can be found on the PHP site:

Replace America/Location with your server’s timezone.