Deprecated: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated

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

Problem:
The client is experiencing multiple PHP errors in the WordPress admin area using WPML Version 4.6.13. These include a deprecated

rtrim()

function error, an undefined array key warning, and a fatal error related to a dismissed admin notice.
Solution:
We replicated the issue and confirmed that these problems will be addressed in the upcoming WPML 4.7 update. Until then, we recommend checking our known issues page and ensuring all other themes and plugins are up to date. If these steps do not resolve the issue or if the solution becomes outdated, please open a new support ticket at our support forum.

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This topic contains 2 replies, has 2 voices.

Last updated by Kor 7 months, 3 weeks ago.

Assisted by: Kor.

Author	Posts
September 4, 2024 at 6:12 pm #16142251
evanW-4	Background of the issue: I am trying to do anything in the WordPress admin area. This is WPML Version 4.6.13, so it is up to date. Using an output of the entire debug stack, with if(is_null($value) ) { $e = new Exception(); error_log($e->getTraceAsString()); } Symptoms: Deprecated: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/wp-includes/formatting.php on line 2831. PHP Warning: Undefined array key "in-grace" in /var/www/html/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/includes/admin-notices/Dismissed.php on line 105. PHP Fatal error: Uncaught Error: Value of type null is not callable in /var/www/html/wp-content/plugins/sitepress-multilingual-cms/vendor/otgs/installer/includes/admin-notices/Dismissed.php:105 Questions: How can I resolve the deprecated rtrim() error? What is causing the undefined array key "in-grace" warning? How do I fix the PHP Fatal error related to the dismissed admin notice?
September 4, 2024 at 6:23 pm #16142341
Kor WPML Supporter since 08/2022 Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	Thank you for your patience. I regret any inconvenience caused, but to proceed with troubleshooting, I kindly ask for a snapshot of the site. Alternatively, with your permission, I can create one myself. For this purpose, I typically recommend using the free plugin "Duplicator." If you're already familiar with Duplicator (https://wordpress.org/plugins/duplicator/), please skip the following steps and simply send me the archive file you downloaded. To guide you further, please adhere to these instructions: 1. View the Duplicator instructions video: hidden link 2. Consult WPML's instructions on providing supporters with a copy of your site: https://wpml.org/faq/provide-supporters-copy-site/ 3. If the archive file exceeds 400MB, please use Duplicator's file filters to exclude cache, wp-uploads directory, media, and archive files. Once you have the archive file ready, kindly share the link with us. You can utilize platforms like Google Drive, Dropbox, or similar for file sharing, as the snapshot file might be large. Please note that your next reply will be private, visible only to you and me. You can paste the file link there. Rest assured that once the issue is resolved, I will delete the local site.
September 5, 2024 at 9:05 am #16143742
Kor WPML Supporter since 08/2022 Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	THanks for your patience. I'm able to replicate the issue that you mentioned. As per our dev's reply here, https://wpml.org/forums/topic/deprecated-rtrim-passing-null-to-parameter-1-string-of-type-string/#post-14664775 this issue will be fixed in WPML 4.7. I apologize for the inconvenience.
September 9, 2024 at 12:21 pm #16156217
evanW-4	We will wait for the 4.7 release. Seems like it has been in development for nearly a year so I really hope it comes soon