Undefined Index paymentType

[Simperfy]

No paymentType in responses. I assumed it's paymentScheme now.

this is the json response I got.

"merchant" => array:14 [▶]
"buyer" => []
"items" => array:1 [▶]
"status" => "CREATED"
"id" => "ca23efd8-9017-4e35-9af1-7d7ab4846c41"
"totalAmount" => array:3 [▶]
"requestReferenceNumber" => "46fe3f6241ee479153965a056a114dd95"
"transactionReferenceNumber" => null
"receiptNumber" => null
"createdAt" => "2017-11-10T08:57:40.624Z"
"updatedAt" => "2017-11-10T08:57:40.624Z"
"expiredAt" => "2017-11-10T09:57:40.622Z"
"paymentScheme" => "CREDIT_CARD"
"paymentStatus" => "PENDING"
"redirectUrl" => array:3 [▶]
"refundedAmount" => "0"
"expressCheckout" => false
"canPayPal" => false

[janehernandez]

This also happens to me everytime after successful payment

Any workaround?
Thank you