Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f578d15f403ce411b725f0958a96fc6d487c5688c55bc66ed645136a296d4365:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^