问题
Suddenly - I don't know since when - I can't edit menu item types anymore. When I click the select button, a pop up appears, but it stays empty. It's the same for new menu's and menu items.
Does it seem familiar to anyone? I already searched a lot, but I can't find other people with the same problem.
It seems like the javascript is not loading.
I'm running Joomla 3.4.3
回答1:
If JavaScript was broken, I guess you would not see the modal at all.
Increase the error level in Joomla configuration (System -> Global Configuration -> Server -> Error Reporting, and maybe in the modal page you will see a clearer error message).
回答2:
One possible cause is the Header set X-Frame-Options: "deny" setting in the apache configuration. This causes a Load denied by X-Frame-Options error in the browser. Changing the apache configuration to Header always append X-Frame-Options SAMEORIGIN fixed it for me.
来源：https://stackoverflow.com/questions/31417895/joomla-menu-item-type-pop-up-is-empty