Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 12d731211bc0851b791680913cc4c6812823d5c46cba5b1207a91a4ed4ab6006:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^