Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 094ee25ea17cc0dff674d9ffe8162fbe5d615bebab50dbc45b29c03be18d2f9c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^