I am using wp cli php library and this class Widget-command is thrwing an error when calling :

Utils\report_batch_operation_results( 'widget', 'delete', count( $args ), $count, $errors );

The exact error is :
PHP Fatal error: Uncaught Error: Call to undefined function WP_CLI\Utils\report_batch_operation_results() in ...\vendor\wp-cli\widget-command\src\Widget_Command.php:364

I do have the Util namespace, with the function report_batch_operation_results, I suspect the call to the namespace which may cause the issue.

Could you check please and inform me.