Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2f387e831ea7627bab90067c6b6150bc16d8e142cfeccbf92ea414783e19b387:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^