VelocityServlet : Error processing the template

java.lang.NumberFormatException: For input string: "15.html/go/screen/NeedAdvice"
java.lang.NumberFormatException: For input string: "15.html/go/screen/NeedAdvice"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
	at java.lang.Integer.parseInt(Integer.java:456)
	at java.lang.Integer.(Integer.java:620)
	at com.otherobjects.webkit.Controller.handleRequest(Unknown Source)
	at org.apache.velocity.servlet.VelocityServlet.doRequest(VelocityServlet.java:372)
	at org.apache.velocity.servlet.VelocityServlet.doGet(VelocityServlet.java:333)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:126)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
	at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
	at com.caucho.server.http.Invocation.service(Invocation.java:315)
	at com.caucho.server.http.CacheInvocation.service(CacheInvocation.java:135)
	at com.caucho.server.http.RunnerRequest.handleRequest(RunnerRequest.java:346)
	at com.caucho.server.http.RunnerRequest.handleConnection(RunnerRequest.java:274)
	at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
	at java.lang.Thread.run(Thread.java:595)