Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 796a1c7324882a26981a7e68b899c339afc3a83dc42a8955b468e11e4cb05b63:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^