Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a948a4a9bdace6099152d9a51e7c133c6c1625075d8773c1a753021ce8273103:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^