2016/12/05 00:30:06 [error] 62861#0: *166944 FastCGI sent in stderr: "PHP message: A valid DateTime could not be recreated from "-0001-11-30 10:00:00 +1000 Australia/Sydney"  because the following errors occurred: <br /> Array
(
    [warning_count] => 0
    [warnings] => Array
        (
        )

    [error_count] => 1
    [errors] => Array
        (
            [0] => Unexpected data found.
        )

)
 <br /> PHP version: 7.0.8-0ubuntu0.16.04.3
PHP message: PHP Fatal error:  Uncaught Error: Call to a member function format() on boolean in /www/bookingsbyrxxxxxxxx/public/wp-content/plugins/event-espresso-core-reg/core/domain/entities/DbSafeDateTime.php:66
Stack trace:
#0 [internal function]: EventEspresso\core\domain\entities\DbSafeDateTime->__wakeup()
#1 /www/bookingsbyrxxxxxxx/public/wp-includes/functions.php(333): unserialize('a:12:{s:2:"id";...')
#2 /www/bookingsbyrxxxxxxxx/public/wp-content/plugins/event-espresso-core-reg/core/EE_Session.core.php(504): maybe_unserialize('a:12:{s:2:"id";...')
#3 /www/bookingsbyrxxxxxxxxxxx/public/wp-content/plugins/event-espresso-core-reg/core/EE_Session.core.php(410): EE_Session->_retrieve_session_data()
#4 /www/bookingsbyrxxxxxxxxxxx/public/wp-content/plugins/event-espresso-core-reg/core/EE_Session.core.php(193): EE_Session->_espresso_session()
#5 /www/bookingsbyrxxxxxxxxxxxxxxxxx/public/wp-includes/plugin.php(524): EE_Session->open_session('')
#6 /www/bookingsbyroncl" while reading response header from upstream, client: 162.xxx.179.xxx, server: bookings.byronclinic.com, request: "GET /registration-checkout/?uts=1480635657&e_reg_url_link=1-3822a72f712ceca2a6bfb2341c4f2633&step=payment_options&revisit=1 HTTP/1.0", upstream: "fastcgi://unix:/var/run/php7-fpm-bookingsbyrxxxxxxxxxxxx.sock:", host: "bookings.byronclinic.com"