Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c174632e77b6cf6dc2a6a4badaa21280a43cba883222a203a174e0c34fcc9b10:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^