Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3f69d762e3c3317d7b523c5baae871d51500d11eb4149a768e6626654594bd52:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^