Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2340f15b9e9835211672b6e60076fafd79d1f816040dbebf3a1c77292362a9e1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^