Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3db57dde318fb462695a5b16f95b6b1932fe027d698127ceb8e1aa9172b71779:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^