Fatal error: Uncaught Error: Class 'Matrix\Operators\Operator' not found in /home/recreatina/www/wp-content/plugins/wp-ultimate-csv-importer-pro/vendor/markbaker/matrix/classes/src/Operators/DirectSum.php:8
Stack trace:
#0 {main}
thrown in /home/recreatina/www/wp-content/plugins/wp-ultimate-csv-importer-pro/vendor/markbaker/matrix/classes/src/Operators/DirectSum.php on line 8