Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f647127f9c77f745bae7fa31401b8631fac5664690e5d8a89cf8c505297b2b3c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^