Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d0fa518b0c4908b0aefb785adf276646131968006dc51d9c5512f535a92f6a2d:15:8
   |
15 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^