Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 760bb42ae097b4fc24df1a36663b74ea7c1ecd07c044c8a1b54716c453e1248c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^