Error type: "Bad Request". Error message: "API key not valid. Please pass a valid API key." Domain: "global". Reason: "badRequest".
Did you added your own Google API key? Look at the help.
Check in YouTube if the id UCFc13eL395-3djEjjnhLWLg belongs to a channelid. Check the FAQ of the plugin or send error messages to support.
Did you added your own Google API key? Look at the help.
Check in YouTube if the id UCFc13eL395-3djEjjnhLWLg belongs to a channelid. Check the FAQ of the plugin or send error messages to support.