findMembers() NullPointerException

https://drive.google.com/file/d/1-56z2OwhgOWWX6GUn3tW-d0MZkFC0OGR/view?usp=sharing Configuration에는 MemberService가 추가되어있고 MemberService에 @Service를 달면 APPLICATION FAILED TO START가 뜹니다. Description: The bean 'memberService', defined in class path resource [hello/hellospring/SpringConfig.class], could not be registered. A bean with that name has already been defined in file [C:\Users\강수아\Downloads\hello-spring\hello-spring\out\production\classes\hello\hellospring\service\MemberService.class] and overriding is disabled. Action: Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true