Error type: "Forbidden". Error message: "Method doesn't allow unregistered callers (callers without established identity). Please use API Key or other form of API consumer identity to call this API." Domain: "global". Reason: "forbidden".
Did you added your own Google API key? Look at the help.
Check in YouTube if the id youtube belongs to a username. Check the FAQ of the plugin or send error messages to support.
What is the difference between Clearfil Photo Bond and Clearfil SE Bond?
Clearfil Photo Bond was first marketed in 1987 and was developed to be used with a total-etch technique. Clearfil SE Bond was introduced in 1999 and is a self-etch based system.