Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 441ada7cc4358bb6b31fd20053090fe1976578c950a78cbd77290b4254c49d78:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^