Yii2 Captcha Image not showing

Question

<?php echo $form->field($model, 'captcha')->widget(Captcha::className(), [
                                              ]); ?> 

Passed requirement in yii2 requirement like GD and imagick liberies but captcha image is not showing.

Answer 1

} else {
        ob_clean();  //Add this line, can solve this problem. Or add in other suitable places
        $this->setHttpHeaders();
        Yii::$app->response->format = Response::FORMAT_RAW;
        return $this->renderImage($this->getVerifyCode());
    }

This will help, please change in \vendor\yiisoft\yii2\captcha\CaptchaAction.php and will show image.