Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ccc9293e1283eed1bf8462e7f69419b7332aab983270d07ad165d42c2ed80bac:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^