Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> da4638d43f3ed5cd97cc2792aecffdda6797ebcaf1cfe3a595b353e934c5809e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^