Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> baf92e3501d99af7024a9408d9977f17f6ef60095c97848ea668c4acbf7aefb2:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^