Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d339ae105966afe01c89bf02f844083f35761adaabaef145d9d8bd923b16fa41:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^