Notice: date_default_timezone_set(): Timezone ID '9' is invalid

[suin]

( ! ) Notice: date_default_timezone_set(): Timezone ID '9' is invalid in /Users/suin/Dropbox/Suin/Projects/GitHub/xoops-commentin/html/install/include/makedata.php on line 69
Call Stack
#   Time    Memory  Function    Location
1   0.0001  245312  {main}( )   ../index.php:0
2   0.0062  312664  include( '/Users/suin/Dropbox/Suin/Projects/GitHub/xoops-commentin/html/install/custom/install_insertData_theme.inc.php' )  ../index.php:98
3   0.0066  340912  require_once( '/Users/suin/Dropbox/Suin/Projects/GitHub/xoops-commentin/html/install/wizards/install_insertData.inc.php' )  ../install_insertData_theme.inc.php:3
4   0.0279  1148512 make_data( )    ../install_insertData.inc.php:52
5   0.0299  1155560 date_default_timezone_set ( )   ../makedata.php:69