Fatal error: Uncaught Error: Class 'PhpSpec\ObjectBehavior' not found in /home/opcon/src/composer/vendor/phpro/soap-client/spec/Phpro/SoapClient/CodeGenerator/Rules/AssembleRuleSpec.php:18 Stack trace: #0 {main} thrown in /home/opcon/src/composer/vendor/phpro/soap-client/spec/Phpro/SoapClient/CodeGenerator/Rules/AssembleRuleSpec.php on line 18