Fatal error: Uncaught Error: Interface "ExchangeInterface" not found in /home/koyuncug/public_html/app/Exchanges/Bitfinex.php:7 Stack trace: #0 /home/koyuncug/public_html/bootstrap/autoload.php(35): require_once() #1 /home/koyuncug/public_html/index.php(18): require_once('/home/koyuncug/...') #2 {main} thrown in /home/koyuncug/public_html/app/Exchanges/Bitfinex.php on line 7