twanW

Problem:
You are encountering an issue where the Translation Management dashboard in WPML fails to load after adding a 30th language. This results in a WordPress database error indicating that a specific table does not exist. The problem only occurs when a 30th language is added; it functions correctly with up to 29 languages.
Solution:
We have identified that this is a known issue related to using a custom database prefix with more than 30 languages. Our development team is working on a permanent fix that will be included in future versions of WPML. Meanwhile, we recommend following the workaround provided in our errata page. You can find detailed steps to resolve this issue by visiting https://wpml.org/errata/custom-database-prefix-and-having-a-30-languages-can-cause-a-database-error-when-visiting-translation-dashboard/.

Please note that this solution might be irrelevant if it's outdated or not applicable to your specific case.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 at our support forum.