Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6c8b4e706654410b22be2d12bd0995669cd9d08df00935419d2489ddaa28abfb:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^