Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b730e36c573a00528c5a5753d246d474d382c0b1f19fab51ba546fe66c237a11:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^