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Fatal error: Uncaught Error: Call to a member function reject() on int

Resolved

Reported for: WPML Multilingual CMS 4.6.3

Topic Tags: Bug

Overview of the issue

If you are using Memcached on your server and attempt to update WPML String Translation before the WPML core plugin, you see the following error:

Fatal error: Uncaught Error: Call to a member function reject() on int in …/wp-content/plugins/wpml-string-translation/classes/translation-files/Domains.php:132.

Workaround

Our developers are aware of this situation. In the meantime:

  1. Access to your /wp-content/plugins/ directory via FTP.
  2. Rename the wpml-string-translation folder. This will disable WPML String Translation.
  3. Clear your cache server, specifically Memcached or Redis.
  4. Update WPML to 4.6+.
  5. Rename the wpml-string-translation folder to its original name.
  6. Activate it from the Plugins page. The error should be gone.