Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ce23997dfb0cc72b01842668ebb34d410062533b697dd815144e3cfcb52ab9b3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^