Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ba9087e1c0703234d8fc43e2d0000cfa8a34cda8e86ac02e16135d16395e5e9c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^