Fatal error when saving translatable acf options page

Dieses Thema ist gelöst. Hier finden Sie eine Beschreibung des Problems und der Lösung.

Problem:
The client experienced a fatal error when saving an ACF options page, which seemed to be related to a compatibility issue between ACF and WPML.
Solution:
1. We initially downgraded the ACFML version on the client's website to temporarily resolve the issue.
2. We then updated the client to the latest ACFML release, version 2.2.1, after confirming the fix for the issue. We advised the client to ensure a full website backup before updating. The update can be downloaded from here.

If this solution does not resolve your issue, or if it seems outdated, we recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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 problems persist, please open a new support ticket.

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Schlagwörter: Bug

Dieses Thema enthält 3, hat 0 Stimmen.

Zuletzt aktualisiert von Lucas Vidal de Andrade Vor 1 Woche, 6 Tagen.

Assistiert von: Lucas Vidal de Andrade.

Autor	Beiträge
Februar 27, 2026 um 7:36
fabianS-4	I have an acf options page which used to work just fine but now whenever I save it I get a fatal error which seems to be related to acf / wpml: Fatal error: Uncaught TypeError: md5(): Argument #1 ($string) must be of type string, array given in /home/alfredmu/public_html/dev/wp-content/plugins/acfml/classes/Strings/Package.php:174 Stack trace: #0 /home/alfredmu/public_html/dev/wp-content/plugins/acfml/classes/Strings/Package.php(174): md5(Array) #1 /home/alfredmu/public_html/dev/wp-content/plugins/acfml/classes/Options/EditorHooks.php(312): ACFMLStringsPackage::getStringName(Array, Array) #2 /home/alfredmu/public_html/dev/wp-content/plugins/acfml/classes/Options/EditorHooks.php(295): ACFMLOptionsEditorHooks->registerFieldTranslation(Array, Array, 'fr') #3 /home/alfredmu/public_html/dev/wp-content/plugins/acfml/classes/Options/EditorHooks.php(164): ACFMLOptionsEditorHooks->onUpdateTranslationValue(Array, 'options_fr', Array) #4 /home/alfredmu/public_html/dev/wp-includes/class-wp-hook.php(343): ACFMLOptionsEditorHooks->onUpdateValue(Array, 'options_fr', Array) #5 /home/alfredmu/public_html/dev/wp-includes/plugin.php(205): WP_Hook->apply_filters(Array, Array) #6 /home/alfredmu/public_html/dev/wp-content/plugins/advanced-custom-fields-pro/includes/acf-value-functions.php(244): apply_filters('acf/update_valu...', Array, 'options_fr', Array, Array) #7 /home/alfredmu/public_html/dev/wp-content/plugins/advanced-custom-fields-pro/includes/acf-value-functions.php(287): acf_update_value(Array, 'options_fr', Array) #8 /home/alfredmu/public_html/dev/wp-content/plugins/advanced-custom-fields-pro/includes/acf-form-functions.php(174): acf_update_values(Array, 'options_fr') #9 /home/alfredmu/public_html/dev/wp-includes/class-wp-hook.php(341): _acf_do_save_post('options_fr') #10 /home/alfredmu/public_html/dev/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters(NULL, Array) #11 /home/alfredmu/public_html/dev/wp-includes/plugin.php(522): WP_Hook->do_action(Array) #12 /home/alfredmu/public_html/dev/wp-content/plugins/advanced-custom-fields-pro/includes/acf-form-functions.php(152): do_action('acf/save_post', 'options_fr') #13 /home/alfredmu/public_html/dev/wp-content/plugins/advanced-custom-fields-pro/pro/admin/admin-options-page.php(100): acf_save_post('options_fr') #14 /home/alfredmu/public_html/dev/wp-includes/class-wp-hook.php(341): acf_admin_options_page->admin_load('') #15 /home/alfredmu/public_html/dev/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters('', Array) #16 /home/alfredmu/public_html/dev/wp-includes/plugin.php(522): WP_Hook->do_action(Array) #17 /home/alfredmu/public_html/dev/wp-admin/admin.php(242): do_action('load-kuia_page_...') #18 {main} thrown in /home/alfredmu/public_html/dev/wp-content/plugins/acfml/classes/Strings/Package.php on line 174 Es gab einen kritischen Fehler auf dieser Website. Prüfe bitte den Posteingang deines Website-Administrators auf Anweisungen. Wenn du weiterhin Probleme hast, wende dich bitte an die Support-Foren. Erfahre mehr über die Problembehandlung in WordPress.
Februar 27, 2026 um 10:06 #17859202
Lucas Vidal de Andrade WPML-Unterstützer seit 11/2023 Sprachen: Englisch (English ) Spanisch (Español ) Deutsch (Deutsch ) Portugiesisch, Brasilien (Português ) Zeitzone: Europe/Vienna (GMT+01:00)	I've escalated your ticket to our development team with a copy of your website. They'll analyze and provide us with a feedback on what's causing this and what can solve it. This might take a few days. I'll keep you updated. Thank you for your patience.
März 2, 2026 um 8:17 #17863552
Lucas Vidal de Andrade WPML-Unterstützer seit 11/2023 Sprachen: Englisch (English ) Spanisch (Español ) Deutsch (Deutsch ) Portugiesisch, Brasilien (Português ) Zeitzone: Europe/Vienna (GMT+01:00)	Hey there, We are still cheking for the causes/solution to your issue. Meanwhile, I've downgraded your ACFML version, on your website. That solved the issue for now. I'll be back once I have new information, on how you can use the plugin's latest version with no errors. Thank you.
März 6, 2026 um 8:37 #17877011
Lucas Vidal de Andrade WPML-Unterstützer seit 11/2023 Sprachen: Englisch (English ) Spanisch (Español ) Deutsch (Deutsch ) Portugiesisch, Brasilien (Português ) Zeitzone: Europe/Vienna (GMT+01:00)	Hello there, Thank you for waiting. The issue should have been fixed on ACFML's latest release, 2.2.1. Please ensure to have a full website backup, and update it to the mentioned version. You can download it from here: https://wpml.org/download/acfml/?section=changelog Let me know how it goes.