Error type: "Bad Request". Error message: "Invalid channel." Domain: "youtube.search". Reason: "invalidChannelId". Location type: "parameter". Location: "channelId".
Did you added your own Google API key? Look at the
help.
Check in YouTube if the id
UCDknRAkmnHnNgiSpF-GScGw belongs to a channelid. Check the
FAQ of the plugin or send error messages to
support.