HTTP Status 500 ? Internal Server Error


Type Exception Report

Message An exception occurred processing [iscrizione.htm] at line [29]

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

Exception

org.apache.jasper.JasperException: An exception occurred processing [iscrizione.htm] at line [29]

26: 	
27: 	visual = anteprima || ev.valido();
28: 	if (!visual)
29: 		response.sendRedirect("/");
30: 		
31: 	head_title = ev.titolo_ev + " - Iscrizione online";
32: 	if (ev.parole_chiave!=null){


Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:610)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:489)
	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:779)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

java.lang.IllegalStateException: Cannot call sendRedirect() after the response has been committed
	org.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFacade.java:488)
	org.apache.jsp.iscrizione_htm._jspService(iscrizione_htm.java:678)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:779)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
	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:779)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

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


Apache Tomcat/9.0.70