WPML All Import - PHP Fatal error: Uncaught Error: Class 'WPML\AI\WCML' not found

Overview of the issue

When using WP-CLI to run an import with WP All Import and the WPML All Import add-on, the following error occurs:

PHP Fatal error: Uncaught Error: Class ‘WPML\AI\WCML’ not found in …/wp-content/plugins/wpml-all-import/wpml-all-import.php:275

Workaround

Please make a full backup of your site before proceeding.

1. Open the …/wp–content/plugins/wpml–all–import/wpml–all–import.php file.
2. Look for lines 12-14:

   1 2 3

   require_once "includes/rapid-addon.php";   require_once "vendor/autoload.php";

   And replace them with:

   1 2 3

   require_once __DIR__ . "/includes/rapid-addon.php";    require_once __DIR__ . "/vendor/autoload.php";