Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d57b5914afbba2d73b424d4824f00cc335be11f54b753ffea8cf8c79b69cb707:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^