Fix Call to undefined method WCS_Staging::is_duplicate_site()

Fatal error: Uncaught Error: Call to undefined method WCS_Staging::is_duplicate_site() in /wp-content/plugins/woocommerce-payments/includes/subscriptions/class-wc-payments-subscriptions.php:132

The error message you’re seeing indicates that there is an undefined method called is_duplicate_site() being called in the file class-wc-payments-subscriptions.php at line 132. This error is typically caused by a compatibility issue between different plugins or a problem with the WooCommerce Payments plugin itself.

To resolve this issue, you can try the following steps:

  1. Update WooCommerce Payments: Make sure you are using the latest version of the WooCommerce Payments plugin. Check for any available updates and install them.
  2. Check for Plugin Compatibility: If you recently installed or updated a plugin, it might be conflicting with WooCommerce Payments. Disable any recently installed or updated plugins one by one and see if the error disappears. This will help identify the conflicting plugin, allowing you to troubleshoot further.
  3. Disable WooCommerce Payments: Temporarily disable the WooCommerce Payments plugin and check if the error persists. If the error disappears, it suggests that there may be a problem with the plugin itself. In that case, you can try reinstalling or contacting the plugin developer for support.
  4. Review Custom Code: If you have added any custom code or made modifications to the WooCommerce Payments plugin files, review the changes you made. Ensure that you haven’t accidentally removed or renamed any necessary methods or functions.
  5. Debugging: Enable debugging mode in WordPress Hosting to get more detailed error messages. Add the following line to your wp-config.php file:
    define( 'WP_DEBUG', true );
    This will display any additional errors or warnings that might be related to the issue. Note that it’s important to disable debugging mode once the issue is resolved to prevent sensitive information from being exposed.
  6. Seek Support: If none of the above steps resolve the issue, consider reaching out to the plugin developer or the support forums for WooCommerce Payments. They will have more specific knowledge about the plugin and can provide you with further assistance.

Remember to always create a backup of your website before making any significant changes or updates to plugins or code.

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