Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> affa76bfa22b8505478ece5a58438619c75e7f4ad46c284e5f42235924a816d8:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^