Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 932928160b541fa14a84e110af60397a7a3538e070cb8ed6f03b49b813fa1133:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^