When I run: phpcs /path/to/module --standard=MEQP2 It gives me the following error > PHP Fatal error: Trait 'MEQP\Utils\Helper' not found in > /opt/marketplace-eqp/MEQP2/Sniffs/Classes/NameResolutionSniff.php on > line 23 phpcs -i The installed coding standards are PSR1, PEAR, Zend, MySource, PSR12, PSR2, Squiz, MEQP2 and MEQP1 class NameResolutionSniff <?php /** * Copyright © Magento. All rights reserved. * See COPYING.txt for license details. */ namespace MEQP2\Sniffs\Classes; use PHP_CodeSniffer\Config; use PHP_CodeSniffer\Files\File; use PHP_CodeSniffer\Sniffs\Sniff; use MEQP\Utils\Helper; /** * Class NameResolutionSniff * Dynamic sniff that detects the use of literal class and interface names. * Requires 'm2-path' to be configured. */ class NameResolutionSniff implements Sniff { /** * Include Helper trait. */ use Helper; /** * Violation severity. * * @var int */ protected $severity = 8; /** * String representation of warning. * * @var string */ protected $warningMessage = 'Literal namespace detected. Use ::class notation instead.'; /** * Warning violation code. * * @var string */ protected $warningCode = 'LiteralNamespaceFound'; /** * Literal namespace pattern. * * @var string */ private $literalNamespacePattern = '/^[\\\]{0,2}[A-Z][A-Za-z0-9]+([\\\]{1,2}[A-Z][A-Za-z0-9]+){2,}(?!\\\+)$/'; /** * Class names from current file. * * @var array */ private $classNames = []; /** * A bootstrap of Magento application. * * @var \Magento\Framework\App\Bootstrap */ private $bootstrap; /** * @inheritdoc */ public function register() { return [ T_CONSTANT_ENCAPSED_STRING, T_DOUBLE_QUOTED_STRING, ]; } /** * @inheritdoc */ public function process(File $sourceFile, $stackPtr) { if (Config::getConfigData('m2-path') === null || $sourceFile->findPrevious([T_STRING_CONCAT, T_CONCAT_EQUAL], $stackPtr - 1, null, false, null, true) || $sourceFile->findNext([T_STRING_CONCAT, T_CONCAT_EQUAL], $stackPtr + 1, null, false, null, true) ) { return; } $tokens = $sourceFile->getTokens(); $content = trim($tokens[$stackPtr]['content'], "\"'"); if (preg_match($this->literalNamespacePattern, $content) === 1) { if (!$this->bootstrap) { $this->bootstrap = $this->getBootstrap(); } if ($this->classExists($content)) { $sourceFile->addWarning($this->warningMessage, $stackPtr, $this->warningCode, [], $this->severity); } } } /** * Checks if class exists by class name. * * @param string $className * @return bool */ private function classExists($className) { if (!array_key_exists($className, $this->classNames)) { $this->classNames[$className] = class_exists($className) || interface_exists($className); } return $this->classNames[$className]; } } and line no 23 is : > use Helper; Any idea how to fix this issue?