Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4a16a9e414a231064b7babf9925afbd6c881cc91c419d2414d57d390ab1cf495:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^