Problem: The client is experiencing a 504 Gateway Time-out error when trying to activate the WPML Multilingual CMS 4.6.15 plugin, despite increasing PHP values like max execution time and max_input_vars. The error logs show a 'connection refused' message while connecting to upstream. Solution: We recommend the following steps to resolve the issue: 1. Ensure you back up the site completely to prevent any issues. It's even better if you could test this on a staging site first. 2. Navigate to your database. 3. Locate the table
icl_background_tasks
and delete all entries from it. 4. Go to Plugins and try activating WPML again.
If this solution does not resolve your issue or seems irrelevant due to being outdated or not applicable to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent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 problems persist, please open a new support ticket at WPML support forum for further assistance.
