Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0f57bffe2a846353a9f75adca13eff568b7e3332150b67f6bb12b4fca4406d9e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^