Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 69689e77b844a228468139f11bf8527fd007aa6719e37419c60ff970c2508200:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^