HTTP Status 500 -

type Exception report

message

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

exception

java.lang.NullPointerException
	bpz.bk.BKUtil.extractRefererSearchEngineName(BKUtil.java:331)
	bookservlets.Go.doGet(Go.java:669)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.12 logs.

Apache Tomcat/5.5.12