PHP Fatal error: Uncaught InvalidArgumentException: Argument $language_code must be a non empty string

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This topic is split from https://wpml.org/forums/topic/site-moved-or-copied-action-required-17/

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Last updated by philippeM-34 3 years, 6 months ago.

Assisted by: Bigul.

Author	Posts
June 20, 2022 at 9:00 am #11497021
philippeM-34	Fatal error while trying to translate PHP Fatal error: Uncaught InvalidArgumentException: Argument $language_code must be a non empty string. in /home/directadmin22/domains/baikushop.be/public_html/wp-content/plugins/sitepress-multilingual-cms/classes/translations/class-wpml-translation-element.php:77 Here you can find a URL to the debug log, there are definitely some errors referring to WPML. https://pastebin.com/8TxSdj06
June 20, 2022 at 9:27 am #11497417
Bigul	Hello, Welcome to the WPML support forum. I will do my best to help you to resolve the issue. The Debug log is showing the following fatal error a few times. Please translate a post or page and make sure this error is still tracked in debug.log. PHP Fatal error: Uncaught InvalidArgumentException: Argument $language_code must be a non empty string. in /home/directadmin22/domains/baikushop.be/public_html/wp-content/plugins/sitepress-multilingual-cms/classes/translations/class-wpml-translation-element.php:77 We had a similar error in the past and it was fixed in the latest version of WPML. Please refer to the following links for more details. https://wpml.org/forums/topic/critical-error-on-plugin-activation/ https://wpml.org/errata/a-fatal-error-is-thrown-on-front-end-when-a-menu-is-assigned-to-a-location-and-wpml-setup-is-not-complete/ If the Fatal error exists in debug.log, please try the following troubleshooting steps after a full site backup{mandatory} and make sure the issue is existing or not. 1) Go to WPML>>Support page, click on the Troubleshooting link (blue link in the middle of the page) 2) On the Troubleshooting page, please click on the following options of the Clean up section. Wait for confirmation of processing after each one. - Clear the cache in WPML - Remove ghost entries from the translation tables - Fix element_type collation - Set language information - Fix WPML tables collation - Assign translation status to duplicated content - Synchronize local job ids with ATE jobs - Fix terms count - Fix post-type assignment - Cleanup and optimize string tables -- Thanks! Bigul