Fatal error: Uncaught Error: Class "Illuminate\Foundation\Testing\TestCase" not found in /home/mydemotec/public_html/windstream/vendor/kevupton/laravel-coinpayments/tests/TestCase.php:3 Stack trace: #0 {main} thrown in /home/mydemotec/public_html/windstream/vendor/kevupton/laravel-coinpayments/tests/TestCase.php on line 3