Thread:Project:Support desk/Upgrade Wiki from 1.18 to 1.22.4 (2)

after upgrading from 1.18 to 1.22.4 I recieve an errore notice, opening my site: "Warning: require_once [function.require-once]: 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 'UTC' for 'UTC/0.0/no DST' instead in /home/dorotinf/public_html/wikigenia/includes/GlobalFunctions.php on line 2300

Parse error: syntax error, unexpected $end, expecting T_VARIABLE or '$' in /home/dorotinf/public_html/wikigenia/includes/GlobalFunctions.php on line 2300" Can anyone help resolve?