Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 40bb7137e2f2778990d4c1a9daff887e97c6920830593d953393de0da88ebf9f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^