Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d46124d000d1469b30ca17fdff310e2380cd47b55f1d57945ae95c3ef7a691e3:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^