Team captain: Illona van Tulden Position: Tail
Member 2: Mark Hoebeke Position: Outside center
Member 3: Jacco bezemer Position: Inside center
Member 4: Gerhard Schut Position: Point
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 PLJjA0i5oMak0eI6W8tGQ5GquePqd8duSk belongs to a playlist. Check the FAQ of the plugin or send error messages to support.