[Spring] org.yaml.snakeyaml.constructor.DuplicateKeyException: while constructing a mapping

에러메시지

Caused by: org.yaml.snakeyaml.constructor.DuplicateKeyException: while constructing a mapping
 in 'reader', line 1, column 1:
    server:
    ^
found duplicate key spring
 in 'reader', line 9, column 1:
    spring:
    ^

들여쓰기가 문제인가 싶었는데 아니었다

쓰으읍 .. 하 .... ^^
떡하니 있던 빨간 줄을 무시한 죄

yml 작성 방법이 틀린 것이었음

해결

spring:
  output:
    ansi:
      enabled: always

spring:
  datasource:
    url: jdbc:h2:tcp://localhost/~/jpashop
    username: sa
    password:
    driver-class-name: org.h2.Driver

위 코드를 아래처럼 바꿨다
👇

spring:
  datasource:
    url: jdbc:h2:tcp://localhost/~/jpashop
    username: sa
    password:
    driver-class-name: org.h2.Driver

  output:
    ansi:
      enabled: always

성공 !!

덕분에 작성법 제대로 이해함 😎