Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1507b77fac0a3f13065350507706c9d07a3133862750b7c8d860fafeef31b2f0:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^