php - Error: Module does not exist when clicking links in sugarcrm CE -

php - Error: Module does not exist when clicking links in sugarcrm CE -

at moment when click module link in menu comes saying "error: module not exist." can still access module typing link in address bar. (dir/index.php?module=&action=index&return_module=&return_action=detailview)

this happens in list view when clicking on links record.

please help me !

thanks

sugar ce version 6.5.16 (build 1082)

php error-handling sugarcrm