Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b651a344b669e49472d5f409d911dead2b63b82283dcc27f7b7cc8fc4261cc15:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^