Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 5261c8f8c361124523408cb114672eb3bd0577832b759ff07be8e79d09a58f5e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^