title: In kartik/gridview of yii2 export link is not display its shows the #?
body: <p>I have written following code for export data as csv or other format using kartik/gridview plugin in yii2. When i click on export button its display # sign on each type of export so hot fix this issue.</p>
  
  <p>index.php</p>
  
  <pre><code>    &lt;?php
      use yii\helpers\Html;
      use yii\grid\GridView;
      use yii\widgets\Pjax;
      use app\models\AdminUserMaster;
      use yii\helpers\Url;
      use app\models\SubAdminRoles;
      use kartik\export\ExportMenu; 
  /* This code for design coloumns */
                          $gridColumns = [
                              ['class' =&gt; 'yii\grid\SerialColumn'],
                              'full_name',
                              'email',
                              ['class' =&gt; 'yii\grid\ActionColumn'],
                          ];
  
  /* This code create export menu */
      echo ExportMenu::widget([
          'dataProvider' =&gt; $dataProvider,
          'columns' =&gt; $gridColumns,
           'target' =&gt; ExportMenu::TARGET_BLANK,
          'fontAwesome' =&gt; true,
          'dropdownOptions' =&gt; [
              'label' =&gt; 'Export All',
              'class' =&gt; 'btn btn-default'
          ]]);
  
  /* This code create a gridview with column and data with action and number column */
      echo \kartik\grid\GridView::widget([
          'dataProvider' =&gt; $dataProvider,
          'filterModel' =&gt; $searchModel,
           'responsive' =&gt; true,
              'hover' =&gt; true,
              'bordered' =&gt; false,
              'floatHeader' =&gt; true,
                      'pjax' =&gt; true,
          'columns' =&gt; $gridColumns,]);
  
      ?&gt;
  /* This code will configured the gridview module */    
  </code></pre>
  
  <p>web.php file</p>
  
  <pre><code>    'modules' =&gt; [            
                      'gridview' =&gt; [
                      'class' =&gt; '\kartik\grid\Module',
                      //'downloadAction' =&gt; 'export',
                      'downloadAction' =&gt; 'gridview/export/download',
                      ]
  
      So please help me how to fix this issue.
  </code></pre>