Regarding Action Dropdown on Dashboard Page

Hello suiteCrm,
we are using the suitecrm 7.7.9. In our Homepage while clicking on Action Link we’ve 3 menu’s [ Add Dashlets , Add Tabs , Edit Tabs ] . On clicking any of the menu’s we got a empty popup [ ] with loader on it. while checking on it , we found script error on the console.while comparing on demo we found one difference. Actual script will be like this

But our code produce the script like this

We don’t know how to rectify this error, So kindly help to solve this