Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a89726c5fb4c44c4ce2df36d2eb24ea7b1539978145b91677b8544eee904976b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^