Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> af177f76dc78ce84592858a1b24b6358f1f1da88e1b6fca0024bb1878029b309:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^