Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 43413922aa00b8342111bc3c299c1953111ce20539c881ad0476aeaafe1fd705:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^