Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0684595db7def1a77577743b96abbd550e67a4313cfa9ec276728eb92ac445db:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^