Deprecated: str_replace(): Passing null to parameter #3

this is the line 2538

/**
* Replaces the set group separator by another one
*
* @param string $part The string to sanitize.
* @return string Sanitized string.
*/
protected function sanitize_key_part( $part ) {
return str_replace( ‘:’, ‘-‘, $part );
}

Hi @fondashci,

After updating Version 8.3.0, i got that error every few seconds !!! 

Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /public_html/wp-content/object-cache.php on line 2538

From what I understand, you’re encountering a deprecation warning related to the str_replace() function after updating to Version 8.3.0. This error message appears every few seconds and is located in /public_html/wp-content/object-cache.php on line 2538.

Deprecation warnings like this are typically not harmful, but they indicate that a certain piece of code might not work in future versions of PHP. The warning you’re seeing is related to the third parameter of the str_replace() function, which should not be null.

Here are a few steps you can take to resolve this issue:

1. Update Your Plugins and Themes: Make sure all your plugins and themes are updated to their latest versions. Sometimes, outdated plugins or themes can cause conflicts with newer versions of WooCommerce or WordPress.
2. Check Your PHP Version: Ensure that your website is running on a supported version of PHP. WooCommerce recommends using PHP 7.4 and up to version 8.1. Here’s a link to the ?? WooCommerce Server Recommendations.
3. Disable Plugins: Try disabling all your plugins except WooCommerce to see if the issue persists. If the error disappears, re-enable your plugins one by one until you find the one causing the conflict.
4. Switch Themes: Temporarily switch to a default WordPress theme like Storefront. If the issue is resolved, the problem might be with your current theme. Here’s a handy guide on testing for conflicts: ?? How to Test for Plugin and Theme Conflicts.

If none of these steps work, could you please share your site’s System Status with us? It will give us a better understanding of your site’s setup and help us identify the problem. You can find it via WooCommerce > Status. Select Get system report and then Copy for support.

Once you’ve gathered this information, please paste it inside a Code block in your reply, or use https://pastebin.com to paste it and share the link with us.

Thanks for your patience and cooperation in this matter! We’re here to help you get this sorted.