Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0a53d4df073d3bc99c6dfa12fe296ed8932d365555207f7eedf3af613edb7433:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^