WPML

WP-Optimize – Fatal Error When Activating WPML with Multi-Domain Setup and WP-Optimize Active

Published 2024-10-01 · Updated 2025-05-06
Status
Resolved by author
Resolved in
WP-Optimize 4.2.0
Related plugin/theme
WP-Optimize - Clean, Compress, Cache
Topic tags
Compatibility

Overview of the issue

If you are using WP-Optimize – Clean, Compress, Cache plugin alongside WPML and A different domain per language feature is enabled, it leads to the following fatal error:

Fatal error: Uncaught Error: Call to a member function get_current_language() on null in /wpml-url-cached-converter.php on line 18.

Workaround

Please, make sure of having a full site backup of your site before proceeding.


  • Open …/wp-content/plugins/wp-optimize/cache/class-wpo-cache-config.php file.

  • Look for line 225.

  • Comment out that line: 
    			//'uploads'									=> wp_normalize_path(wp_upload_dir()['basedir']),

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