Fatal error: Uncaught Error: Interface "Hamcrest\SelfDescribing" not found in C:\mywamp\sites\allsite\calcomposer\vendor\hamcrest\hamcrest-php\tests\Hamcrest\StringDescriptionTest.php:4 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\hamcrest\hamcrest-php\tests\Hamcrest\StringDescriptionTest.php on line 4