Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 82f4910ce596262a52b5c1f39fa52dabef707bef215c5d611475fd795b60ea28:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^