Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fdfdd167e62717bdfe0ba49b5cd65a372977553e280470518c7e6b86da55c816:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^