Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7154d186b34935180ba192c6fdddca17bb3dbf723cc82675f472afbafa4bad95:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^