Class 'mPDF' not found


        return $this->_mpdf;




     * Sets the mPDF API instance


    public function setApi()


        $this->_mpdf = new mPDF(










i am install mpdf widget, during installation it gives error “Class ‘mPDF’ not found” .

please give me a solution to solve this problem


I had some trouble with this as well. I got it to work in the following way;

I added kartik-v/yii2-mpdf : "*" at the end of the require section of composer.json from the app root directory, then with command window ran composer update.

Once installed try a test action in SiteController. You will have to start with

 Yii::$app->response->format = \yii\web\Response::FORMAT_RAW;

then look at the example of Widget Type Usage on

To output variable info based on a model, let’s say you have a model “Invoice” with attributes, id, customer, and total. Make a view file, say ‘invoice.php’, that will display the data in html.








    <td><?= $model->id; ?></td>

    <td><?= $model->customer; ?></td>

    <td><?= $model->total; ?></td>



The link to your controller action(we’ll call the action ‘pdf’) will need to pass the id -…invoice/pdf/id#

In InvoiceController

use kartik\mpdf\Pdf;


public function actionPdf($id)


  Yii::$app->response->format = \yii\web\Response::FORMAT_RAW;

  $model = $this->findModel($id)

  $content = $this->renderPartial('invoice',['model'=>$model]);

  //Then set up pdf

    $pdf = new Pdf([

//only some of the options shown here

        'mode' => Pdf::MODE_CORE, 

        'format' => Pdf::FORMAT_A4, 

        'orientation' => Pdf::ORIENT_PORTRAIT, 

        'destination' => Pdf::DEST_BROWSER, 

        'content' => $content,  



    return $pdf->render();