Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 888be051ffca629fc186ee71d3997da0da9c188bbafcbf18cc1c434e9dbbe663:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^