Warning: include(vendor/autoload.php): failed to open stream: No such file or directory in C:\wamp\www\wssitex\vendor\google\crc32\tests\GoogleTest.php on line 18

Warning: include(): Failed opening 'vendor/autoload.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\wamp\www\wssitex\vendor\google\crc32\tests\GoogleTest.php on line 18

Fatal error: Class 'PHPUnit\Framework\TestCase' not found in C:\wamp\www\wssitex\vendor\google\crc32\tests\GoogleTest.php on line 25