MyPBX Web GUI Shows Undefined

What to do if the Web Configuration Interface of MyPBX shows “undefined”?

Retry after refreshing the IE web page; if the problem has not been solved, please delete the cookie and cache of the browser.
The way to delete the cookie and cache of the browser (Take IE browser as a example):
On the IE menu bar, select “Tools” –>”Internet options”, and select “general” on the pop-up window. Then Click the “delete” button of “Browsing history”.