estou usando o JAR recomendado pelo curso através do hocalhost:8080 e quando envio minha solicitação aparece o seguinte erro:
localhost/:1 Failed to load http://localhost:8080/api/autores: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access. The response had HTTP status code 415.
