Sitemanager error

Licence expired [1]. Please reinstall the licence file.

Backtrace

/home/sitemanager/admin/lib/functions.php 1327 sm_error
/home/sitemanager/admin/lib/conf.php 33 sm_check_licence
/home/sitemanager/admin/lib/standard.php 32 require_once
/home/sitemanager/admin/lib/std_index.php 8 require_once