Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3834787bbb6405ebe98a0d2754b008df586e83759e6117393315ec9016ab9e67:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^