Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 78b3538508fcf5ce4de16d994867d7ffd3162c379049c0fa9e84637c2911765e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^