Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b97dafa729f548ca1e8c26b2601e7b305148fa1e4b928aa5ef16419d644c39ed:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^