Adobe Commerce upgrade 2.4.3, 2.3.7-p1 PHP Fatal error Hotfix

This article provides a fix for when merchants try to upgrade to Adobe Commerce (all deployment methods) or Magento Open Source 2.4.3 or 2.3.7-p1 they see the following error:

PHP Fatal error: Uncaught Error: Call to undefined function Magento\Framework\Filesystem\Directory\str_contains() in <…>/magento/vendor/magento/framework/Filesystem/Directory/DenyListPathValidator.php:74

The issue will be fixed in the scope of 2.4.4, 2.4.3-p1 and 2.3.7-p2 releases.

Affected versions and products

Issue

The issue is caused by the new Adobe Commerce 2.4.3 and 2.3.7-p1 versions using PHP 8 only function str_contains. Adobe Commerce 2.4.3 and 2.3.7-p1 are only compatible with PHP 7.4 so this function cannot be used.

Steps to reproduce :

Attempt to upgrade to Adobe Commerce 2.4.3 or 2.3.7-p1.

Expected result:

Successful upgrade.

Actual result:

PHP fatal error.

Solution

As a workaround you run the following command in the CLI/Terminal: composer require symfony/polyfill-php80 from the Magento root folder or install a composer patch.

In order to fix the issue for 2.4.3, Adobe Commerce (all deployment methods) and Magento Open Source merchants should apply patch:

AC-384_Fix_Incompatible_PHP_Method__2.4.3_ce.patch

In order to fix the issue for 2.3.7-p1, Adobe Commerce (all deployment methods) and Magento Open Source merchants should apply patch:

AC-384__Fix_Incompatible_PHP_Method__2.3.7-p1_ce.patch

How to Apply the Patch

See How to apply a composer patch provided by Magento for instructions.

Related Reading

GitHub Unsupported PHP 8 command in Magento 2.4.3 EE #33680