Help Parsing Long Integer from Input in Win32 API (Possible Error?)

System.InvalidOperationException: Operation failed with error code 18885920258

at MyApp.Controllers.PaymentController.ProcessRequest() in /src/Controllers/PaymentController.cs:line 229

System.InvalidOperationException: Operation failed with error code 188

at MyApp.Services.OrderService.ValidateOrder() in /src/Services/OrderService.cs:line 143

System.InvalidOperationException: Operation failed with error code 859

at MyApp.Data.DataAccessLayer.ExecuteQuery() in /src/Data/DataAccessLayer.cs:line 78

System.InvalidOperationException: Operation failed with error code 202

at MyApp.Utils.Logger.LogError() in /src/Utils/Logger.cs:line 35

System.InvalidOperationException: Operation failed with error code 58

at MyApp.Network.Communication.SendPacket() in /src/Network/Communication.cs:line 60