HTTP Status 500 – Internal Server Error


Type Exception Report

Message java.lang.NoClassDefFoundError: Could not initialize class org.apache.taglibs.standard.util.XmlUtil

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

Exception

javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class org.apache.taglibs.standard.util.XmlUtil
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:332)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126)

Root Cause

java.lang.NoClassDefFoundError: Could not initialize class org.apache.taglibs.standard.util.XmlUtil
	org.apache.taglibs.standard.tlv.JstlBaseTLV.validate(JstlBaseTLV.java:154)
	org.apache.taglibs.standard.tlv.JstlCoreTLV.validate(JstlCoreTLV.java:97)
	org.apache.jasper.compiler.TagLibraryInfoImpl.validate(TagLibraryInfoImpl.java:397)
	org.apache.jasper.compiler.Validator.validateXmlView(Validator.java:1905)
	org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1875)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:224)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:391)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:367)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:605)
	org.apache.jasper.servlet.JspServletWrapper.loadTagFile(JspServletWrapper.java:269)
	org.apache.jasper.compiler.TagFileProcessor.loadTagFile(TagFileProcessor.java:588)
	org.apache.jasper.compiler.TagFileProcessor.access$000(TagFileProcessor.java:49)
	org.apache.jasper.compiler.TagFileProcessor$TagFileLoaderVisitor.visit(TagFileProcessor.java:671)
	org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1558)
	org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2385)
	org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2437)
	org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2443)
	org.apache.jasper.compiler.Node$Root.accept(Node.java:471)
	org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2385)
	org.apache.jasper.compiler.TagFileProcessor.loadTagFiles(TagFileProcessor.java:694)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:236)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:391)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:367)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:605)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126)

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


Apache Tomcat/9.0.60