这个页面打不开，出现以下这样的错误，是什么原因引起的？

页面代码：
<%@ page contentType="text/html;charset=gbk"%>
<%@ page import="java.util.*" %>
<%@ page session="true" %>
<%@ include file="inc/head.inc"%>
<br>  <form name="form1" method="post" action="login.jsp">
          <div align=center>用户登陆</div>
          <br>          
          <table width="300" border="0" cellspacing="1" cellpadding="1" align="center">
          <br>
            <tr> 
              <td align="right">用户名</td>
              <td> 
                <input type="text" name="username" size="15" maxlength="25">
              </td>
            </tr>
            <tr> 
              <td align="right">密码</td>
              <td> 
                <input type="password" name="passwd" size="15" maxlength="20">
              </td>
            </tr>
            <tr> 
              <td colspan="2" align="center"> 
                <input type="submit" name="Submit" value="登陆">
              
                <input type="reset" name="Submit2" value="取消">
              </td>
            </tr>
             <tr>     
            <td colspan="2" align="center">
          <p>&nbsp;</p>
            测试用户：wxy 密码：wxy 
       </td>
        </tr>
            <tr> 
              <td colspan="2" align=center>如果不是本站会员，请在此<a href="reg.jsp">注册</a>。</td>              
            </tr>
         </table>
   </form><%@include file="inc/tail.inc"%>      
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出现错误：
exception 
org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: -1 in the jsp file: nullGenerated servlet error:
    [javac] Compiling 1 source fileE:\Eclipse_Project\bookshop\work\org\apache\jsp\index_jsp.java:391: handlePageException(java.lang.Exception) in javax.servlet.jsp.PageContext cannot be applied to (java.lang.Throwable)
      if (pageContext != null) pageContext.handlePageException(t);
                                          ^
1 error
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:85)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:248)
at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:315)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:328)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:427)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:142)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:240)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:187)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)