Error type: "Forbidden". Error message: "Project 812300450389 has been scheduled for deletion and cannot be used for API calls. Visit https://console.developers.google.com/iam-admin/projects?pendingDeletion=true to undelete the project." Domain: "usageLimits". Reason: "accessNotConfigured".
Did you added your own Google API key? Look at the help
Check in YouTube if the id UCaJecLodCalRY5EI_7BFfNA
belongs to a channelid. Check the FAQ
of the plugin or send error messages to support