Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b558ca5d620244cd23d0faf7e69308ddca5467255c84c8c1f2becde271f81d82:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^