Fatal error: Uncaught Error: Class "FTX\Api\HttpApi" not found in /home/julienke/www/sites/bbrochard/vendor/vdbelt/ftx-php/src/Api/SpotMargin.php:9 Stack trace: #0 {main} thrown in /home/julienke/www/sites/bbrochard/vendor/vdbelt/ftx-php/src/Api/SpotMargin.php on line 9