Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0268a89e30b9a69aecdcf5744652b738b51d15f478c27ef9216b736054daedcc:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^