Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 410a8139ee370a5ee0bdee2df32732b39d20f148e8af7906b9605db5b7482588:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^