Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fc528880394548c616e713c035110f110ca34afa0b06846c1ae0306fc0ea18a2:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^