org.apache.taglibs.standard.tlv.JstlBaseTLV.validate

exception

org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:617)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:476)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:366)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:209)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:267)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1221)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1005)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:952)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.cosl.common.util.EncodingFilter.doFilter(EncodingFilter.java:51)
	com.cosl.util.filter.SystemFilter.doFilter(SystemFilter.java:62)

root cause

java.lang.NullPointerException
	org.apache.taglibs.standard.tlv.JstlBaseTLV.validate(JstlBaseTLV.java:178)
	org.apache.taglibs.standard.tlv.JstlCoreTLV.validate(JstlCoreTLV.java:134)
	org.apache.jasper.compiler.TagLibraryInfoImpl.validate(TagLibraryInfoImpl.java:949)
	org.apache.jasper.compiler.Validator.validateXmlView(Validator.java:1916)
	org.apache.jasper.compiler.Validator.validate(Validator.java:1884)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:215)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:431)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:608)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:476)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:366)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:209)
	org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:267)
	org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1221)
	org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1005)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:952)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	com.cosl.common.util.EncodingFilter.doFilter(EncodingFilter.java:51)
	com.cosl.util.filter.SystemFilter.doFilter(SystemFilter.java:62)
遇到这个错误，解决不了，该怎么办