2022.01.19 TIL

에러: query did not return a unique result: 2

2023-01-19 16:16:09.555 ERROR 7290 --- [nio-8080-exec-4] o.a.c.c.C.[.[.[/].
[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet]
in context with path [] threw exception [Request processing failed; nested
exception is org.springframework.dao.IncorrectResultSizeDataAccessException:
query did not return a unique result: 2; nested exception is javax
.persistence.NonUniqueResultException: query did not return a unique result:
2] with root cause

    "message": "query did not return a unique result: 2; nested exception is javax.persistence.NonUniqueResultException: query did not return a unique result: 2",
    "path": "/api/sellers/products/nickname"