Fatal error: Uncaught Error: Class "FTX\Tests\Api\TestCase" not found in /home/julienke/www/sites/ftx2/vendor/vdbelt/ftx-php/tests/Api/SpotMarginTest.php:8 Stack trace: #0 {main} thrown in /home/julienke/www/sites/ftx2/vendor/vdbelt/ftx-php/tests/Api/SpotMarginTest.php on line 8