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I'm getting error while compiling the Magento 2 admin module. The error which I'm getting is

Fatal error: Class TutorialSimpleNewsControllerAdminhtmlNews
contains 1 abstract method and must therefore be declared abstract or
implement the remaining methods
(MagentoFrameworkAppActionInterface::execute) in
/Applications/XAMPP/xamppfiles/htdocs/MagentoTest/app/code/Tutorial/SimpleNews/Controller/Adminhtml/News.php
on line 60

Here is my code:

    <?php



namespace TutorialSimpleNewsControllerAdminhtml;



use MagentoBackendAppAction;

use MagentoBackendAppActionContext;

use MagentoFrameworkRegistry;

use MagentoFrameworkViewResultPageFactory;

use TutorialSimpleNewsModelNewsFactory;



class News extends Action

{

    /**

     * Core registry

     *

     * @var MagentoFrameworkRegistry

     */

    protected $_coreRegistry;



    /**

     * Result page factory

     *

     * @var MagentoFrameworkViewResultPageFactory

     */

    protected $_resultPageFactory;



    /**

     * News model factory

     *

     * @var TutorialSimpleNewsModelNewsFactory

     */

    protected $_newsFactory;



    /**

     * @param Context $context

     * @param Registry $coreRegistry

     * @param PageFactory $resultPageFactory

     * @param NewsFactory $newsFactory

     */

    public function __construct(

        Context $context,

        Registry $coreRegistry,

        PageFactory $resultPageFactory,

        NewsFactory $newsFactory

    ) {

       parent::__construct($context);

        $this->_coreRegistry = $coreRegistry;

        $this->_resultPageFactory = $resultPageFactory;

        $this->_newsFactory = $newsFactory;

    }



    /**

     * News access rights checking

     *

     * @return bool

     */

    protected function _isAllowed()

    {

        return $this->_authorization->isAllowed('Tutorial_SimpleNews::manage_news');

    }

}

Yes.. you need to add the execute method in the controller action..eg:-

public function execute() {



$this->resultPage = $this->resultPageFactory->create();

$this->resultPage->setActiveMenu('Tutorial_SimpleNews::manage');

return $this->resultPage;       

}

Default Abstract clss is required.

class News extends Action

change to

abstract class News extends Action

execute method not required.

So your file at appcodeTutorialSimpleNewsControllerAdminhtmlNew.php

<?php namespace TutorialSimpleNewsControllerAdminhtml;

use MagentoBackendAppAction

use MagentoBackendAppActionContext;

use MagentoFrameworkRegistry;

use MagentoFrameworkViewResultPageFactory;

use TutorialSimpleNewsModelNewsFactory;



abstract class News extends Action

{





   /**

     * Core registry

     *

     * @var MagentoFrameworkRegistry

     */

    protected $_coreRegistry;



    /**

     * Result page factory

     *

     * @var MagentoFrameworkViewResultPageFactory

     */

    protected $_resultPageFactory;



    /**

     * News model factory

     *

     * @var TutorialSimpleNewsModelNewsFactory

     */

    protected $_newsFactory;



    /**

     * @param Context $context

     * @param Registry $coreRegistry

     * @param PageFactory $resultPageFactory

     * @param NewsFactory $newsFactory

     */

    public function __construct(

        Context $context,

        Registry $coreRegistry,

        PageFactory $resultPageFactory,

        NewsFactory $newsFactory

    ) {

       parent::__construct($context);

        $this->_coreRegistry = $coreRegistry;

        $this->_resultPageFactory = $resultPageFactory;

        $this->_newsFactory = $newsFactory;

    }



    /**

     * News access rights checking

     *

     * @return bool

     */

    protected function _isAllowed()

    {

        return $this->_authorization->isAllowed('Tutorial_SimpleNews::manage_news');

    }

}

?>