Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dacbb626a8094eecd1b82fb5cbddb98940d914a6bc43e8e64d745a9ba2688282:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^