Just trying to insert a youtube link and when the popup appears there is an error message which is then hiddden behind the tabs and content.
The effect is that the video shows for a fraction of a second on the frontend and then disappears.The code appears to be correct :
<iframe src="https://www.youtube.com/embed/oyNV1A0AFyo" width="560" height="315" class="mceItemMedia mceItemIframe" style="margin: 3px 10px 5px 3px; vertical-align: middle; float: right;" frameborder="0" allowfullscreen="allowfullscreen"></iframe>
I've attached a screen print of the backend and the message in the console at the bottom.
I've added the site URL below.
I updated to Joomla Version 3.8
Thanks for your help