我是新的codeignitor框架工作。我得到404错误再次nagain.my登录页面工作正常。

` <div class="col-lg-4 col-lg-offset-4">
    <h2>Forgot Password</h2>
    <p>Please enter your email address and we'll send you instructions on how to reset your password</p>
    <?php $fattr = array('class' => 'form-signin');
         echo form_open(site_url().'ForgotPassword/forgot/', $fattr); ?>
    <div class="form-group">
      <?php echo form_input(array(
          'name'=>'email', 
          'id'=> 'email', 
          'placeholder'=>'Email', 
          'class'=>'form-control', 
          'value'=> set_value('email'))); ?>
      <?php echo form_error('email') ?>
    </div>
    <?php echo form_submit(array('value'=>'Submit', 'class'=>'btn btn-lg btn-primary btn-block')); ?>
    <?php echo form_close(); ?>    
</div>`

      404 Page Not Found
            The page you requested was not found. to be resolved