I've created a custom Magento 2 Module and I am facing a problem of URL returning blank page If I am calling the block from template file using layout

Magento Version : 2.2.4

URL Trying to visit :

It returns a blank page.

here is my files structure:


namespace Mahran\Whatsapp\Block;
class Display extends \Magento\Framework\View\Element\Template
    public function __construct(\Magento\Framework\View\Element\Template\Context $context)

    public function sayHello()
        return __('Hello World');



namespace Mahran\Whatsapp\Controller\Index;

class Display extends \Magento\Framework\App\Action\Action
    protected $_pageFactory;
    public function __construct(
        \Magento\Framework\App\Action\Context $context,
        \Magento\Framework\View\Result\PageFactory $pageFactory)
        $this->_pageFactory = $pageFactory;
        return parent::__construct($context);

    public function execute()
        return $this->_pageFactory->create();


<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <referenceContainer name="content">
        <block class="Mahran\Whatsapp\Block\Display" name="whatsapp_display" template="Mahran_Whatsapp::sayhello.phtml" />



 * @var \Mahran\Whatsapp\Block\Display $block

echo $block->sayHello();
  • Change mahran\whatsapp to Mahran\Whatsapp – Sohel Rana Nov 24 '18 at 12:11
  • @SohelRana Sadly this did't work I have another action called Test.php that I echo "Hello World" directly inside and it's working fine. – Mostafa Mahran Nov 24 '18 at 13:09
  • @MostafaMahran does that work as per my updates made to question? – Himmat Paliwal Nov 24 '18 at 13:21
  • @HimmatPaliwal I made exactly these updates but still it's the same – Mostafa Mahran Nov 24 '18 at 13:22
  • Ok, let me check it further.. I hope you have already added the routes.xml – Himmat Paliwal Nov 24 '18 at 13:25

I have updated the code and added at below public repo: https://bitbucket.org/hemant2586/mahran_whatsapp/src/master/

Its working fine for me, download and check with it..

| improve this answer | |
  • It's working now ! can I understand the changes you made because I can't seem to find any difference in code that my eye could catch. – Mostafa Mahran Nov 24 '18 at 13:40
  • Not sure but it may be CamelCase issue, would suggest to check if you update the directory name accordingly and block class name in xml correctly.. <block class="Mahran\Whatsapp\Block\Display" (note the naming case) – Himmat Paliwal Nov 24 '18 at 13:42
  • How can i send my EventObserver log message by whatsapp message? @Himmat Paliwal – zus Aug 30 '19 at 7:45

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