Implicitly marking parameter $append as nullable is deprecated

Hi @mehrazmorshed ,

Thanks for reaching out—and I totally get how concerning it can be to see a deprecation warning pop up, especially when you’re trying to keep things running smoothly.

The warning you’re seeing:

PHP Deprecated: Automattic\WooCommerce\Internal\Admin\Settings\Utils::truncate_with_words(): Implicitly marking parameter $append as nullable is deprecated, the explicit nullable type must be used instead

is related to upcoming changes in PHP 8.4. This version introduces a deprecation for implicitly nullable parameter declarations. You can read more about that here, if you’re curious.

We’re already tracking this on our end, and you can follow the progress here: WooCommerce GitHub issue #57385. In the meantime, here are a couple of things you can do:

• Temporary workaround: Downgrading your PHP version slightly to 8.3 should avoid the warning for now.
• Optional tweak: If you’d prefer to keep PHP 8.4 and simply suppress the deprecation warnings, you can add the following line to your wp-config.php file:

error_reporting(E_ALL & ~E_DEPRECATED & ~E_USER_DEPRECATED);

This won’t fix the root cause, but it can help keep your logs clean while we work on a permanent solution.

Thanks again for your patience!