java.lang.IllegalArgumentException: When allowCredentials is true, allowedOrigins cannot contain the special value "*" since that cannot be set on the "Access-Control-Allow-Origin" response header. To allow credentials to a set of origins, list them explicitly or consider using "allowedOriginPatterns" instead. 스프링부트에서 웹소켓 서버를 만들어서간단한 플레시게임을 만드려고 했는데 엥?? 이전에는 이렇게 작성하면 별 문제 없었는데??모든 Access-Contro..