Fatal error: Uncaught Error: Class "Symfony\Contracts\Translation\Test\TranslatorTest" not found in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\translation\Tests\IdentityTranslatorTest.php:17 Stack trace: #0 {main} thrown in C:\mywamp\sites\allsite\calcomposer\vendor\symfony\translation\Tests\IdentityTranslatorTest.php on line 17