Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c084ce6eaffa44312c578c6628bc6e29f628facadaac73980fe7777ee4fd4be6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^