Fatal error: Uncaught Error: Class "Opis\JsonSchema\Parsers\Vocabulary" not found in C:\xampp\htdocs\wo\woocommerce\vendor\opis\json-schema\src\Parsers\DefaultVocabulary.php:28 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wo\woocommerce\vendor\opis\json-schema\src\Parsers\DefaultVocabulary.php on line 28