Need fix mercadopago payment gateway on my app (status 500 after correct payment)

Need fix mercadopago payment gateway on my app (status 500 after correct payment) my budget is $25 for this task.

http://151.106.109.147:3333/mercadopago/callback?gatewayId=1&collection_id=58765954682&collection_status=approved&payment_id=58765954682&status=approved&external_reference=client_1_1685500193153&payment_type=debit_card&merchant_order_id=9540261207&preference_id=328839041-baed46ef-66e6-44b2-a42c-80170cb5e5e9&site_id=MLA&processing_mode=aggregator&merchant_account_id=null