Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> abb35a65d3c56e2260c51d8044ee4397d00c8d86c8a395783cae5dab466648ec:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^