Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e629641683bb42b43e25ec670b175791f299c9272bc4470fcc38a4b8c86b4f1b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^