WPML SEO error message

This thread is resolved. Here is a description of the problem and solution.

Problem:

The client is experiencing a PHP deprecation warning on custom post type pages when using the WPML SEO plugin with PHP version 8.3.19. The error message appears under the header, as indicated in the debug log.

Solution:

We have identified that this issue stems from a compatibility problem with PHP 8.3.19. Although this warning does not affect the functionality of the plugin or the site, it can be visually disruptive. We recommend disabling the debug mode in WordPress to prevent such warnings from being displayed. You can do this by editing your wp-config.php file and ensuring the following line is included:

define('WP_DEBUG_DISPLAY', false);

For more details on managing debug mode in WordPress, please refer to this article: Debugging in WordPress.

Please note that this solution might become irrelevant if it's outdated or not applicable to your specific case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the issue persists, please open a new support ticket.

This is the technical support forum for WPML - the multilingual WordPress plugin.

Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.

Tagged: Bug

This topic contains 2 replies, has 0 voices.

Last updated by emelieC 1 day, 4 hours ago.

Assisted by: Bigul.

Author	Posts
March 28, 2025 at 6:39 pm #16874350
emelieC	Background of the issue: I am trying to get an error on custom post type pages. Here is a video describing what I was attempting when the issue occurred: hidden link. The issue can be seen on this page: hidden link. Symptoms: I expected to see no error message under the header, but instead, I got an error message. Questions: Why am I getting an error message on custom post type pages? How can I resolve the error message under the header?
March 31, 2025 at 7:40 pm #16880737
Bigul Supporter Languages: English (English ) Timezone: Europe/Vienna (GMT+02:00)	Hello, Welcome to the WPML support forum. I will do my best to help you resolve the issue. Please share the WordPress debug.log (not WPML debug information) with us so we can collect more details on this. Refer to the following pages for instructions https://wpml.org/documentation/support/debugging-wpml/ https://wordpress.org/documentation/article/debugging-in-wordpress/ To enable the WordPress Debug log, open your wp-config.php file of site root and look for define('WP_DEBUG', false);. Change it to: // Enable WP_DEBUG mode define( 'WP_DEBUG', true ); // Enable Debug logging to the /wp-content/debug.log file define( 'WP_DEBUG_LOG', true ); // Disable display of errors and warnings define( 'WP_DEBUG_DISPLAY', false ); @ini_set( 'display_errors', 0 ); In this case, the errors will be saved to a debug.log log file inside the /wp-content/ directory. Please follow the steps to reproduce the bug and check if you are getting any errors or warnings related to WPML in the log file. If you can paste your debug.log to http://pastebin.com/index.php and provide me with that link, it would be great! (This is the cleanest way because sometimes the logs are long and create a complete mess of discussion). -- Thanks! Bigul
April 1, 2025 at 3:07 pm #16883685
emelieC	Hello Bigul, I now get this in the debug.log: [01-Apr-2025 15:06:05 UTC] PHP Deprecated: urlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/vhosts/bohoclub.com/httpdocs/ashiana/wp-content/plugins/wp-seo-multilingual/classes/class-wpml-wpseo-filters.php on line 131 Whats the issue you think? Thanks! Kind regards, Marcus
April 1, 2025 at 4:37 pm #16883955
Bigul Supporter Languages: English (English ) Timezone: Europe/Vienna (GMT+02:00)	Hi Marcus, Thank you for the updates. This warning happens becuase of a compatibility issue with the PHP 8.3.19 version. But it will not cause any issues in the functionality of the plugin or site, just an alert. This warning will be fixed in the future version of the WPML SEO plugin. Therefore, to prevent unwanted warnings and errors from being displayed to your visitors, it's best to disable debug mode in WordPress. This is a recommended practice to ensure a smoother user experience. To do so, edit your wp-config.php file and add or modify the following line: define( 'WP_DEBUG_DISPLAY', false ); Refer to this article for more details: https://wordpress.org/documentation/article/debugging-in-wordpress/ -- Thanks! Bigul
April 2, 2025 at 10:07 am #16886397
emelieC	sure. just dont like when things are bloating the debug log. All the best!