Error message

• Notice: Undefined index: highlighted in include() (line 126 of /home/arkadiuszgardzielewski.pl/web/arkadiuszgardzielewski.pl/public_html/modules/system/page.tpl.php).
• Notice: Undefined index: sidebar_first in include() (line 138 of /home/arkadiuszgardzielewski.pl/web/arkadiuszgardzielewski.pl/public_html/modules/system/page.tpl.php).
• Notice: Undefined index: sidebar_second in include() (line 144 of /home/arkadiuszgardzielewski.pl/web/arkadiuszgardzielewski.pl/public_html/modules/system/page.tpl.php).
• Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in menu_set_active_trail() (line 2394 of /home/arkadiuszgardzielewski.pl/web/arkadiuszgardzielewski.pl/public_html/includes/menu.inc).