Magento\Framework\Exception\LocalizedException: The XML in file "/" is invalid: Element 'event': Missing child element(s)

Question

i am getting below error for magento 2.4 and it is working fine in magento 2.3

Magento\Framework\Exception\LocalizedException: The XML in file "/var/www/html/magento240/app/code/PPPL/PhonePe/etc/frontend/events.xml" is invalid: Element 'event': Missing child element(s). Expected is ( observer ). Line: 4 Verify the XML and try again. in /var/www/html/magento240/vendor/magento/framework/Config/Reader/Filesystem.php:156 Stack trace: #0 /var/www/html/magento240/vendor/magento/framework/Config/Reader/Filesystem.php(132)

Please find the code for /var/www/html/magento240/app/code/PPPL/PhonePe/etc/frontend/events.xml

<?xml version="1.0"?><config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd"><event name="checkout_onepage_controller_success_action">
 <!-- Do nothing -->
 </event>
</config>

Answer 1

It seems you didn't added observer name inside <event> tag.

You must have to declare <observer> tag inside <event> tag like below..

<observer name="observer_name" instance="Namespace\Module\Observer\ObserverClass" />

Because it's required, You can check more details in below Schema file..

vendor/magento/framework/Event/etc/events.xsd

Hope this will help you!