Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 18cbd5a6fe691eedf4820740d05af42a2d9aded3a84688495ff16e72f1f30684:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^