Every other item on the pages are secure but all the browsers are showing the html5 player as insecure

SEC7111: [Mixed-Content] The origin 'akinstitute.com' was loaded in a secure context but tried to load an insecure script resource at 'www.youtube.com/player_api?_=1538747928060'.

The videos on the page are calling secure videos from youtube for example:

{"1": {"src": "www.youtube.com/watch?v=SQrELBN7yUc?version=3&f=videos&app=youtube_gdata", "type": "video/youtube"}, "config": {"title": "Kids Kung Fu Martial Arts"}},


What do you suggest as a solution?

Thank you.