There are changes to my page and suddenly I get an error message when I try to get into admin.

The main shop

www.theeducationstation.com.au

the error on admin is

Warning: Cannot modify header information - headers already sent by (output started at /home/accelera/public_html/theeducationstation/admin/includes/languages/english/index.php:146) in /home/accelera/public_html/theeducationstation/admin/includes/init_includes/init_templates.php on line 36

Warning: Cannot modify header information - headers already sent by (output started at /home/accelera/public_html/theeducationstation/admin/includes/languages/english/index.php:146) in /home/accelera/public_html/theeducationstation/admin/includes/functions/general.php on line 34

Fatal error: Call to a member function Execute() on a non-object in /home/accelera/public_html/theeducationstation/includes/functions/sessions.php on line 61


Can anyone help please?