HTTP Status 500 – Internal Server Error


Type Exception Report

Message java.lang.NullPointerException

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

Exception

org.apache.jasper.JasperException: java.lang.NullPointerException
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:565)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:481)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.sliva.stat.RequestCounter.doFilter(RequestCounter.java:199)
	io.prometheus.client.filter.MetricsFilter.doFilter(MetricsFilter.java:171)

Root Cause

java.lang.NullPointerException
	com.sliva.user.PagePublications.showArticlePage(PagePublications.java:147)
	org.apache.jsp.article_jsp._jspService(article_jsp.java:211)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.sliva.stat.RequestCounter.doFilter(RequestCounter.java:199)
	io.prometheus.client.filter.MetricsFilter.doFilter(MetricsFilter.java:171)

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


Apache Tomcat/8.5.16