Edit file File name : Type.php Content :<?php namespace Api\V8\Param\Options; use Symfony\Component\OptionsResolver\OptionsResolver; use Symfony\Component\Validator\Constraints as Assert; class Type extends BaseOption { /** * @inheritdoc */ public function add(OptionsResolver $resolver) { $resolver ->setRequired('type') ->setAllowedTypes('type', 'string') ->setAllowedValues('type', $this->validatorFactory->createClosure([ new Assert\NotBlank(), new Assert\Regex([ 'pattern' => ModuleName::REGEX_MODULE_NAME_PATTERN, 'match' => false, ]), ])); } } Save