Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d98ee67126f5acda7c5d64dfef378cd35d585b73582ef39ea5666d32d9e1637f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^