Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 17bcd084f10501df8aa7e984a8ca9adf2c138912d088982299db2dabd4cb79ec:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^