Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a4d642ff97245a2eab3b61bb20c5241721e801b046cfeaeae8438ca78906c605:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^