Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fc32dc2b60c0fc88b70543fd6c296df0f9f2c47cc784da49177386218255d727:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^