Fatal error: Uncaught Error: Class 'Matrix\Operators\Operator' not found in /home/user2090261/www/spectexforma.by/parser/lib/Phpspreadsheet/vendor/markbaker/matrix/classes/src/Operators/Subtraction.php:8 Stack trace: #0 {main} thrown in /home/user2090261/www/spectexforma.by/parser/lib/Phpspreadsheet/vendor/markbaker/matrix/classes/src/Operators/Subtraction.php on line 8