Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dc23374cc86d9ade4c4858aa8e7ec40c3866d2c3da21b44e75468c4159732305:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^