Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> cef8d63e6386b50b673198eea00d763687bf4fbcfdce8d7ed9e504994006d5c5:15:8
   |
15 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^