Support Tickets - Current Version: 2.3 to 2.3.1

When i try to update CMS all work:

• admin/lang/de.ini........... Updated
• admin/lang/en.ini........... Updated
• admin/lang/es.ini........... Updated
• admin/lang/fr.ini........... Updated
• admin/lang/gr.ini........... Updated
• admin/lang/it.ini........... Updated
• admin/lang/pt-br.ini........... Updated
• admin/lang/ro.ini........... Updated
• admin/lang/ru.ini........... Updated
• admin/lang/th.ini........... Updated
• admin/lang/tr.ini........... Updated
• admin/news.php........... Updated
• admin/page.php........... Updated
• admin/searchsetting.php........... Updated
• admin/sitemap.php........... Updated
• admin/tag.php........... Updated
• admin/template/editorlight_edit.php........... Updated
• admin/template/editpage.php........... Updated
• admin/template/newpage.php........... Updated
• admin/template/newssetting.php........... Updated
• admin/template/title_edit.php........... Updated
• admin/user.php........... Updated
• class/class.userlogin.php........... Updated
• config.php........... Updated
• include/functions.php........... Updated
• include/htmlawed.php........... Updated
• page.php........... Updated
• plugins/belowheader/admin/belowheader.php........... Updated
• plugins/belowheader/admin/index.html........... Updated
• plugins/belowheader/admin/lang/de.ini........... Updated
• plugins/belowheader/admin/lang/en.ini........... Updated
• plugins/belowheader/admin/lang/index.html........... Updated
• plugins/belowheader/admin/template/bh.php........... Updated
• plugins/belowheader/admin/template/bhnav.php........... Updated
• plugins/belowheader/admin/template/editbh.php........... Updated
• plugins/belowheader/admin/template/index.html........... Updated
• plugins/belowheader/admin/template/newbh.php........... Updated
• plugins/belowheader/bhinput.php........... Updated
• plugins/belowheader/bhinputb.php........... Updated
• plugins/belowheader/btinput.php........... Updated
• plugins/belowheader/index.html........... Updated
• plugins/belowheader/install.php........... Updated
• plugins/belowheader/readme.txt........... Updated
• plugins/belowheader/uninstall.php........... Updated
• plugins/blog/uninstall.php........... Updated
• plugins/faq/uninstall.php........... Updated
• plugins/newsletter/admin/newsletter.php........... Updated
• plugins/newsletter/admin/template/settings.php........... Updated
• plugins/newsletter/newsletter.php........... Updated
• plugins/ticketing/admin/s_ticket.php........... Updated
• plugins/ticketing/admin/template/ticketcomment.php........... Updated
• plugins/ticketing/admin/template/ticketcommentsort.php........... Updated
• template/mosaic/css/dark.css........... Updated
• template/mosaic/customstyle.php........... Updated
• template/mosaic/header.php........... Updated
• update.php...........

->Update.php seem fail.

i have an error  in log:

PHP Parse error: syntax error, unexpected '1' (T_LNUMBER) in /var/site/www/admin/update.php on line 22

Thx for your help !