Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e92d14eebdad689a61f541f4577665de671230e06afd6a6b2767f995ad0b0ca5:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^