Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c7445b87971a588d18809d23b376254b24bb658ffb0af542767d6c1c10490487:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^