Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ca511330c044d861a36a8ad50d6f9cffa12339c7b701e255f7f4a87829179275:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^