Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f28ea3c34670f62aae737bbcbfade843ee2494362f805c8f3df955481ada21ea:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^