Fatal error: Uncaught Error: Class 'PHP_CodeSniffer\Tests\Standards\AbstractSniffUnitTest' not found in /home/esecureh/public_html/magdemo/vendor/magento/magento-coding-standard/Magento2/Tests/PHP/ArrayAutovivificationUnitTest.php:12 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/magento-coding-standard/Magento2/Tests/PHP/ArrayAutovivificationUnitTest.php on line 12