Warning: Unsupported declare 'strict_types' in D:\xampp\htdocs\wsdemo\vendor\sebastian\diff\tests\Output\AbstractChunkOutputBuilderTest.php on line 1

Fatal error: Default value for parameters with a class type hint can only be NULL in D:\xampp\htdocs\wsdemo\vendor\sebastian\diff\tests\Output\AbstractChunkOutputBuilderTest.php on line 33