Estou com esse erro no curso Básico de Hibernate. Segue LOG abaixo:

type Exception report

message Unable to compile class for JSP

description The server encountered an internal error that prevented it from fulfilling this request.

exception
org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:616)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
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:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

root cause
javax.el.ELException: Provider com.sun.el.ExpressionFactoryImpl not found
javax.el.FactoryFinder.newInstance(FactoryFinder.java:97)
javax.el.FactoryFinder.find(FactoryFinder.java:193)
javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:185)
javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:156)
org.apache.jasper.compiler.PageInfo.(PageInfo.java:80)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:115)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:372)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:333)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
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:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

root cause
java.lang.ClassNotFoundException: com.sun.el.ExpressionFactoryImpl
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1275)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1109)
javax.el.FactoryFinder.newInstance(FactoryFinder.java:83)
javax.el.FactoryFinder.find(FactoryFinder.java:193)
javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:185)
javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:156)
org.apache.jasper.compiler.PageInfo.(PageInfo.java:80)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:115)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:372)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:333)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)
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:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Juliano

Quando o erro ocorre?