Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 50592c7dc5c96f5764554ba8840dfcc779286174758b50e001100a0e1a399c59:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^