Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 98dbf7f245a26b1232cf274d357eca5992985e0f2ac639665c515dc2ce0e0693:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^