Fatal error: Uncaught Error: Class 'PhpSpec\ObjectBehavior' not found in /home/opcon/src/composer/vendor/phpro/soap-client/spec/Phpro/SoapClient/Soap/Engine/Metadata/Collection/PropertyCollectionSpec.php:13 Stack trace: #0 {main} thrown in /home/opcon/src/composer/vendor/phpro/soap-client/spec/Phpro/SoapClient/Soap/Engine/Metadata/Collection/PropertyCollectionSpec.php on line 13