java.lang.IllegalStateException: Can't sendRedirect() after data has committed
to the client.
	at com.caucho.server.connection.AbstractHttpResponse.sendRedirect(AbstractHttpResponse.java:550)
	at javax.servlet.http.HttpServletResponseWrapper.sendRedirect(HttpServletResponseWrapper.java:110)
	at com.caucho.server.connection.ResponseWrapper.sendRedirect(ResponseWrapper.java:279)
	at com.caucho.server.connection.ResponseAdapter.sendRedirect(ResponseAdapter.java:157)
	at _jsp._cursos._index__jsp._jspService(_index__jsp.java:616)
	at com.caucho.jsp.JavaPage.service(JavaPage.java:60)
	at com.caucho.jsp.Page.pageservice(Page.java:579)
	at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:179)
	at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:70)
	at com.caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:175)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:173)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:229)
	at com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:420)
	at com.caucho.server.port.TcpConnection.run(TcpConnection.java:511)
	at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:520)
	at com.caucho.util.ThreadPool.run(ThreadPool.java:442)
	at java.lang.Thread.run(Thread.java:595)