Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 82b9da46a08c0d102164f04ab525f8d6eacd9860d3c3a184748b07b9159c5986:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^