Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0793d84938737d6f98be87d5b4a35b053e7f03ef469c4c858e0323b217bb612e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^