Thanks for the tips Zeljkoskipic
I have been able to narrow it down to the following:
I have backup all DB + WordPress and created a local copied site: Same issues
If I create a clean new website locally, the issue is not there.
I noticed that once I loaded in the DB and reloaded site that I would get the error, however, locally the error was only present with TinyMCE visual editor not showing when TinyMCE Advance plugin installed. If I disabled this on the local site, I could see the editor.
On the live site though, it doesn’t matter if the plugin is disabled or not, the default TinyMCE is giving the same results too and not showing.
Now I found out that if I go to the DB and under wp_usermeta`change “Use_ssl” to 1, reload page, then the editor works again with the plugin TinyMCE Advanced enabled.
But doing this on the live site is not possible because I dont have a SSL Certificate.
Seems like it is a HTTPS and SSL issue with running the Visual Editor. Is there a way to force this through in the browser or would i need to get SSL for my live site?
