Console error

I get the following error that keeps on going in my console:

‘Failed to execute ‘postMessage’ on ‘DOMWindow’: The target origin provided (‘http://www.youtube.com’) does not match the recipient window’s origin (‘https://www.youtube.com’).’

The error refers to this file: http://s.ytimg.com/yts/jsbin/www-widgetapi-vfllmJfT3/www-widgetapi.js (line 22)

I have tried putting the youtube link with ‘http’ and ‘https’ but the same happens.

The videos work but it is a strange error. My website is http://www.globalcph.dk.

https://ww.wp.xz.cn/plugins/youtube-embed-plus/