Getting error when a project developed in Laravel 5.0 & PHP 5.6 version version, trying to run in PHP 7.2 version

When i set up the Laravel 5.0 version project in PHP 7.2 i am getting following error. Please help me how to run this in PHP 7.2 version or is there any other way.

ErrorException in EncryptionServiceProvider.php line 16: Use of undefined constant MCRYPT_RIJNDAEL_128 - assumed 'MCRYPT_RIJNDAEL_128' (this will throw an Error in a future version of PHP)

via Chebli Mohamed