북마크의 TooManyResultsException 에러를 해결하고나서
다른 에러가 나타났다

2024-02-02 22:12:29,135 DEBUG [com.project.bookmark.mapper.BookmarkMapper.selectBookmarkListByUserId] <== Total: 1
2024-02-02 22:12:29,254 ERROR [org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[jsp]] Servlet.service() for servlet [jsp] threw exception
java.lang.NumberFormatException: For input string: "id"
2024-02-02 22:12:29,255 ERROR [org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[dispatcherServlet]] Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [An exception occurred processing [/WEB-INF/jsp/bookmark/bookmark.jsp] at line [17]
14: <c:forEach items="${bookmarkList}" var="bookmark">
15: <div class="mount-box rounded mb-2">
16: <div class="d-flex align-items-center justify-content-between">
17: <a href="/mountain/mountain-review-view?mtId=${mountain.id}">
18: <div class="p-3">
19: <h3 class="font-weight-bold">${mountain.mtName}</h3>
20: <h6>${mountain.mtLocation}</h6>
Stacktrace:] with root cause
java.lang.NumberFormatException: For input string: "id"
이 에러는 예전에 본 적이 있는 에러다
${bookmarkList} 안에서 ${mountain.id}, ${mountain.mtName}, ${mountain.mtLocation}의 값을 찾을 수 없기 때문에 생긴 에러다