Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 32384ec17252bf4853e444214a00ac41c3bbe59a48c6af9c34170afd35a4f804:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^