Problem: If you're experiencing an 'Unknown format specifier "t"' error when trying to open theme and plugins localization in WPML, it occurs due to an issue in the file
wpml-st-translations-file-registration.php
on line 100. Solution: We are aware of this issue and a fix will be included in future updates. For now, we recommend you try the workaround provided in the following link: WPML Errata.
If this solution does not resolve your issue or seems outdated, please check related known issues at https://wpml.org/known-issues/, verify the version of the permanent fix, and confirm that you have installed the latest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. If the problem persists, we highly recommend opening a new support ticket for further assistance.
