Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6e79e20feb258220cbad05b9f6730924fc056593ff4e5663b940a205ea54298e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^