When editing a post, critical error (white page) occurs when WPML is activated. Also WPML shows that...

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

Problem:
If you're experiencing a critical error (white page) when editing a post with WPML activated, and WPML indicates that the REST API is not activated even though it is working, the issue might be related to the ACF Multilingual plugin.
Solution:
We recommend reinstalling the ACF Multilingual plugin with a fresh copy. You can download it from here.

If this solution does not apply to your case, or if it seems outdated, please check related known issues at https://wpml.org/known-issues/, verify the version of the permanent fix, and confirm that you have installed the latest versions of themes and plugins. We highly recommend opening a new support ticket if the problem persists. You can do so at WPML support forum.

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: Exception

This topic contains 4 replies, has 1 voice.

Last updated by haraldS-3 1 week, 6 days ago.

Assisted by: Long Nguyen.

Author	Posts
November 14, 2024 at 9:04 am #16401284
haraldS-3	Background of the issue: I am trying to clone a dev page to a Plesk environment. I copied files and the database to a new server and used 'search & replace' to change the domain in the database. The site I need help with is hidden link. The page uses a password, and I can provide it via a private message. Symptoms: When editing a post, a critical error (white page) occurs when WPML is activated. WPML also shows that the REST API is not activated, but the REST API is working. Questions: Why does a critical error occur when editing a post with WPML activated? Why does WPML indicate that the REST API is not activated when it is working?
November 14, 2024 at 9:48 am #16401478
haraldS-3	Fehler-Details ============== Ein Fehler vom Typ E_ERROR wurde in der Zeile 30 der Datei /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-content/plugins/acfml/classes/strategy/repeater-shuffle/Resolver.php verursacht. Fehlermeldung: Uncaught Error: Class "ACFML\Repeater\Shuffle\Post" not found in /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-content/plugins/acfml/classes/strategy/repeater-shuffle/Resolver.php:30 Stack trace: #0 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-content/plugins/acfml/classes/strategy/repeater-sync/HooksFactory.php(23): ACFML\Repeater\Shuffle\Resolver::getStrategy() #1 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-content/plugins/sitepress-multilingual-cms/classes/action-filter-loader/class-wpml-action-filter-loader.php(148): ACFML\Repeater\Sync\HooksFactory->create() #2 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-content/plugins/sitepress-multilingual-cms/classes/action-filter-loader/class-wpml-action-filter-loader.php(125): WPML_Action_Filter_Loader->run_factory() #3 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-includes/class-wp-hook.php(324): WPML_Action_Filter_Loader->deferred_loader() #4 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #5 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-includes/plugin.php(517): WP_Hook->do_action() #6 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-settings.php(726): do_action() #7 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-config.php(100): require_once('...') #8 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-load.php(50): require_once('...') #9 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-admin/admin.php(34): require_once('...') #10 /var/www/vhosts/global-gruppe.com/global-gruppe.com/dev/wp-admin/post.php(12): require_once('...') #11 {main} thrown
November 14, 2024 at 9:58 am #16401488
Andrey Supporter Languages: English (English ) Russian (Русский ) Timezone: Europe/Kyiv (GMT+02:00)	While one of my teammates addresses your ticket, I will provide you with some initial debugging steps. I recommend downloading fresh copies of the WPML plugins https://wpml.org/account/downloads/ and installing them to see if it helps. If the issue persists, consider moving your website again to the staging site, using plugins like "Duplicator" or "All-in-One Migration." It could be that not all files have been moved or something is corrupted in the database.
November 15, 2024 at 10:58 am #16407585
haraldS-3	i use fresh copies of WPML and reimported files and db, nothing helped
November 19, 2024 at 1:24 am #16417218
Long Nguyen Supporter Languages: English (English ) Timezone: Asia/Ho_Chi_Minh (GMT+07:00)	Hi Harald, According to the error log, you should reinstall the ACF Multilingual plugin with a fresh copy. Please download it here https://wpml.org/download/acfml/?section=changelog If it does not help, I would like to request temporary access (wp-admin and FTP) to your site so I can take a better look at the issue. It would be better to have a testing site where the issue is replicated. Your next reply is set to private to share the info. ❌ IMPORTANT: Please backup your database and website before proceeding ❌ You can use this plugin to create the backup: https://wordpress.org/plugins/duplicator/ ✙ I would need your permission to de-activate and re-activate Plugins and the Theme to change configurations on the site if needed. This is also a reason the backup is critical. Looking forward to your reply. Thanks
November 20, 2024 at 10:55 am #16424035
haraldS-3	Reinstalling ACF Multilingual Plugin did the trick! Thank you!