Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3f44a1a25050ec4711bfdc0aef2935fde597254708aa9ee4405d42b8144be4f6:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^