Custom database prefix and having a 30 languages can cause a database error when visiting Translation Dashboard

Overview of the issue

When using WPML on a site with a custom database prefix (not the default “wp_”) and 30 or more languages, you might experience a database error when visiting the translation dashboard.
This occurs due to a hard-coded database prefix in the WPML plugin code.

Workaround

Please make sure you have a full backup of your site before proceeding.

Open: /wp-content/plugins/sitepress-multilingual-cms/vendor/wpml/wpml/src/Infrastructure/WordPress/Component/Item/Application/Query/SearchQuery/QueryBuilder/ManyLanguagesStrategy/SearchQueryBuilder.php

Look for:

LEFT JOIN wp_icl_translations target_t
   ON target_t.trid = source_t.trid
       AND target_t.language_code IN ({$gluedEscapedLanguageCodes})
LEFT JOIN wp_icl_translation_status target_ts
   ON target_ts.translation_id = target_t.translation_id

Replace with:

LEFT JOIN {$this->queryPrepare->prefix()}icl_translations target_t
   ON target_t.trid = source_t.trid
       AND target_t.language_code IN ({$gluedEscapedLanguageCodes})
LEFT JOIN {$this->queryPrepare->prefix()}icl_translation_status target_ts
   ON target_ts.translation_id = target_t.translation_id

This change ensures that the query uses the correct custom prefix instead of the hardcoded wp_.

Another place is in : /wp-content/plugins/sitepress-multilingual-cms/vendor/wpml/wpml/src/Infrastructure/WordPress/Component/Item/Application/Query/SearchQuery/QueryBuilder/ManyLanguagesStrategy/SearchPopulatedTypesQueryBuilder.php
Look for:

      LEFT JOIN wp_icl_translations target_t
         ON target_t.trid = source_t.trid
             AND target_t.language_code IN ({$gluedEscapedLanguageCodes})
       LEFT JOIN wp_icl_translation_status target_ts
         ON target_ts.translation_id = target_t.translation_id

replace with:

      LEFT JOIN {$this->queryPrepare->prefix()}icl_translations target_t
         ON target_t.trid = source_t.trid
             AND target_t.language_code IN ({$gluedEscapedLanguageCodes})
       LEFT JOIN {$this->queryPrepare->prefix()}icl_translation_status target_ts
         ON target_ts.translation_id = target_t.translation_id