Fatal error: Uncaught Error: Class "PHP_CodeSniffer\Standards\Generic\Sniffs\PHP\ForbiddenFunctionsSniff" not found in /var/www/html/upload/PhpSpreadsheet-master/vendor/squizlabs/php_codesniffer/src/Standards/Squiz/Sniffs/PHP/DiscouragedFunctionsSniff.php:14 Stack trace: #0 {main} thrown in /var/www/html/upload/PhpSpreadsheet-master/vendor/squizlabs/php_codesniffer/src/Standards/Squiz/Sniffs/PHP/DiscouragedFunctionsSniff.php on line 14