Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3935620f792b3e683c03babb4c334709d0e7706d5917ce424f90b3b06540c987:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^