Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e93537416db2bd2edde49db9feed97f13a917b019d2b4ab4c566fb92527707d7:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^