Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7c72ff30b1d951133e406a89483500ca32848082df86fa67f752c6282e30ea0e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^