Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 344c65725d1b2ec9a0cb7f236a696946fcaf20abc9159a3c73d449d3a02179d3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^