Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 695f2938f19b9e034e57709596c2aba826739e40526db7e4a08aa4bda4b30d45:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^