Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 7232d9f15801840f02fb3e59d5a96d6d4512970c5a21c2ba3e6d14538800f556:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^