Error type: "Forbidden". Error message: "The provided API key has an IP address restriction. The originating IP address of the call (40.127.129.61) violates this restriction." Domain: "global". Reason: "forbidden".

Did you added your own Google API key? Look at the help.

Check in YouTube if the id PLBShk0Y6yZ4yyajLw_ss-XianTaGkbBF_ belongs to a playlist. Check the FAQ of the plugin or send error messages to support.