请问首页做一下模态框,会员登录,提示系统错误为什么呢?

<!-- 模态框 -->
<div class="modal fade" id="myModal">
  <div class="modal-dialog modal-dialog-centered">
    <div class="modal-content">
 
      <!-- 模态框头部 -->
      <div class="modal-header">
        <h4 class="modal-title">用户登录</h4>
        <button type="button" class="close" data-dismiss="modal">&times;</button>
      </div>
 
      <!-- 模态框主体 -->
      <div class="modal-body">
        
        <form class="content" id="myform" method="post" novalidate="novalidate">
          {dr_form_hidden()}
          {$form}
          <div class="form-group">
              <div class="input-icon">
                  <i class="fa fa-user"></i>
                  <input class="form-control placeholder-no-fix" type="text" autocomplete="off" placeholder="账号/邮箱/手机" name="data[username]">
              </div>
          </div>
          <div class="form-group">
              <div class="input-icon">
                  <i class="fa fa-lock"></i>
                  <input class="form-control placeholder-no-fix" type="password" autocomplete="off" placeholder="登录密码" name="data[password]">
              </div>
          </div>
          {if $is_code}
          <div class="form-group">
              <div class="input-group login-code">
                  <div class="input-icon">
                      <i class="fa fa-code"></i>
                      <input class="form-control placeholder-no-fix" type="text" autocomplete="off" placeholder="验证码" name="code">
                  </div>
                  <div class="input-group-btn fc-code">
                      {dr_code(120, 35)}
                  </div>
              </div>
          </div>
          {/if}
          <div class="form-actions">
              <label class="rememberme mt-checkbox mt-checkbox-outline">
                  <input type="checkbox" name="remember" value="1"> 记住登录
                  <span></span>
              </label>
              <button type="button" onclick="dr_ajax_member('{dr_now_url()}', 'myform');" class="btn green pull-right"> 登录 </button>
          </div>
          <div class="login-options">
              <ul class="login-oauth">
                  
                  <li>
                      <a href="{Router::oauth_url('weixin', 'login')}"> <img src="{THEME_PATH}assets/oauth/weixin.png"> </a>
                  </li>
              </ul>
          </div>
          <div class="create-account">
              <p>
                  <a href="{dr_member_url('register/index')}"> 注册账号 </a>
                  <a href="{dr_member_url('login/find')}"> 找回密码 </a>
              </p>
          </div>
      </form>
      </div>
 
      
 
    </div>
  </div>
</div>