Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 95bb5384be5854c6c57adaa3319e2d3928ea441bd03a87431e33e03aee784a32:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^