SpringBoot JWT 공부를 하다가 오류를 발견 했다.... 오류 코드를 보면.. io.jsonwebtoken.security.WeakKeyException: The signing key's size is 240 bits which is not secure enough for the HS256 algorithm. The JWT JWA Specification (RFC 7518, Section 3.2) states that keys used with HS256 MUST have a size >= 256 bits (the key size must be greater than or equal to the hash output size). Consider using the io.jsonwebtoken.se..
