Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 19197952ae0d359c0fa73592de5bc8498a1228eaeaf950dd057168f13f0f5339:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^