This issue is commonly caused by an Ad Frame thats being blocked by Adblock for Youtube, but may also be the result of Chrome needing an update or Browser cache that needs clearing.

Please try the following fixes:

1 - Clear Chrome’s browser cache

2 - Update Google Chrome

3 - Try disabling adblock for Youtube - Click on the puzzle piece near the upper righthand corner, select ‘AdBlock for Youtube’ then click on the slider to disable adblocking in youtube.

As a general recommendation, it's best to leave AdBlock for youtube enabled. Please only disable to address issues with specific videos.