I am getting following error on my wordpress website when i try to fetch tumbnail for youtube videos.
Error retrieving a thumbnail from the URL http://img.youtube.com/vi/gjnAnlkfbvk/0.jpg
Libcurl error 0: Failed to connect to 2607:f8b0:4007:801::1000: Network is unreachable. If opening that URL in your web browser shows an image, the problem may be related to your web server and might be something your server administrator can solve.
I asked my server administrator to look at this issue and they told me to asked to plugin developer.
So I am here, I hope you'll help me to fixed this issue asap.