Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 032f60919a23809cd090452aa510453a1563b0086325ec23bfa4828f9b2013df:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^