Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> f120407f337b217de20d9b99201cbdddf138ba6b6fb5168d2daf96de2ff6b782:15:8
   |
15 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^