Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 79d6a4f1fd1033f686d27c990dec8f445d745ed753755e803df592126f2e766b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^