Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ae3d296e2683bb6aecfd809ee2b9f4eb4723fba87c56a6a3f4783e0ec191f617:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^