1 exception(s):
Exception #0 (MagentoFrameworkExceptionRuntimeException): Type Error occurred when creating object: CustomPaymentControllerIndexIndexInterceptor

Exception #0 (MagentoFrameworkExceptionRuntimeException): Type Error occurred when creating object: CustomPaymentControllerIndexIndexInterceptor
#0

namespace CustomPaymentHelper;

use MagentoFrameworkAppHelperAbstractHelper;

class General extends AbstractHelper
{

    public function RandomFunc()
       {
               echo "This is Helper in Magento 2";
       }

}

namespace CustomPaymentControllerIndex;

use CustomPaymentHelperGeneral as CustomHelper;
use MagentoFrameworkAppActionAction;

class Index extends Action
{
    protected $helper;

    public function __construct(
        CustomHelper $helper
    ) {
        $this->helper = $helper;
    }

    public function execute()
    {
        $this->helper->RandomFunc();
    }
}