Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 338c5a6be4b1ed18f82c215141c18d30a56c2527657e08bbc161cba36fd32061:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^