HTTP Status 500 – Internal Server Error


Type Exception Report

Message Cannot expose request attribute 'data' because of an existing model object of the same name

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

javax.servlet.ServletException: Cannot expose request attribute 'data' because of an existing model object of the same name
	org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:124)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1373)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1118)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1057)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:529)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:623)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:103)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:103)
	org.springframework.boot.web.servlet.support.ErrorPageFilter.forwardToErrorPage(ErrorPageFilter.java:191)
	org.springframework.boot.web.servlet.support.ErrorPageFilter.handleException(ErrorPageFilter.java:176)
	org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:143)
	org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:64)
	org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:101)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:119)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/9.0.83