Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b2fe8b0046395aba1150ffef2967aad66c00c750ad88b79b431cfb7175d25c69:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^