Magento 2.2.5 : Cant go to execute() in Controller

Make your controller extend \Magento\Framework\App\Action\Action instead of \Magento\Backend\App\Action, that should solve your issue.

EDIT :

It could also be the case you're trying to hit your controller directly and "Add Secret Key to URLs" feature is turned on at Stores > Configuration > Advanced > Admin > Security > Add Secret Key to URLs. So basically it adds a key param in the URL which is always validated against the access to current resource. If the validation fails, it redirects to dashboard.

Try this code :

<?php

namespace Fudu\HelloWorld\Controller\Adminhtml\Student;

class Create extends \Magento\Backend\App\Action
{
    public function __construct(
        \Magento\Backend\App\Action\Context $context,
        \Magento\Framework\View\Result\PageFactory $resultPageFactory
    ) {
        parent::__construct($context);
        $this->resultPageFactory = $resultPageFactory;
    }
    public function execute()
    {
        echo "controller call successfully";
        exit;
    }
}

You can't grant permission for new admin user on this controller, because when you extend Magento\Framework\App\Action\Action that mean by passing Magento Access Control list.

Please re-check these issues:

• acl.xml file
• make sure your you have _isAllowed function in your controller and return _authorization->isAllowed with resource id in acl.xml file.
• Try to Log out and re-login admin user.

Ex Admin Controller.

Class [Action Name] extends \Magento\Backend\App\Action
{


    /**
     * {@inheritdoc}
     */
    protected function _isAllowed()
    {
        return $this->_authorization->isAllowed('[resource id in **acl.xml**]');
    }
}