Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1d934a2413be4bf202f607d0388594b76479ea17576c19e919659285b94042b4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^