Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dd6cf09665a1f918cbb24c825d44ace249d2b9c8cbd3957530617d766d1c5288:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^