Tipo de error: "Forbidden". Mensaje de error: "Access Not Configured. YouTube Data API has not been used in project 537752813138 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/youtube.googleapis.com/overview?project=537752813138 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry." Dominio: "usageLimits". Razón: "accessNotConfigured".

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Comprueba en YouTube si el id PLq1tzHmztd5sP97Fvy8zJS72NIz--LpnW corresponde a un playlist. Revise el FAQ del plugin or envíe los mensajes de error a support.