Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 531b2e929c36821a4100f15b2cb89d1c091746541bb2901191f919fa5a1c8b45:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^