Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 414425e22c9501feb4b2a76791aadb0b1c15142dd2865c5eaf5284a685b8a4c6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^