I get an error i cannot understand

This is the kind of error i get when i inspect my page (full of iframed YouTube videos):
Blocked a frame with origin "http://www.youtube.com" from accessing a frame with origin "http://www.modadoro.it". Protocols, domains, and ports must match. www-embed-player-vflaEu-Wv.js:103.
I have unistalled all the players and i use exclusively the iframe code to embed the video.
Can you please let me know if there is anything i can do to fix the problem?
FYI: my website: http://www.modadoro.it/farlocco