Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c3fd3156c19ace0780cf9b890ee76bc368024d6b58b3ad0139360f735463e8c2:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^