Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 97cdda47ebc72895a013775ae679420dd4af68e32d6874c28f144d2587c9a6ca:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^