Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d9085430d381508e75e620ef20ba461bd756d32c17c9d863403dc612b834f902:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^