Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> baa92c2a4f1514b1692d5f260b996c26ce0910f77b2d7e11ac38c57151729f96:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^