Question Can't upgrade to Joomla 3.6.3

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looks like the JFactory variable is off.

Any thoughts on that?

first try to disable the kunenasocialshare plugin. if its working then there is a bug on that plugin

I disabled that plug in and I'm still getting the generic error

Rendering Error in layout topics/default: Error decoding JSON data: Syntax error. Please enable debug mode for more information.

But nothing else. No verbose errors. But it still doesn't work.

Looks like there might be an issue with Joomla.

maybe this will help you: github.com/joomla/joomla-cms/pull/12557/files

I was going to try this, but it's not the same in 3.6.4

This is the code from 3.6.4

$temp = new Registry;
$temp->loadString($menu->params);
$params[$hash]->merge($temp);
$title = $menu->title;