Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 58bcca511428825c7b9fde95914e55634d4c56c44d39a368710b7b7b6efa3fc3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^