Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 52ec072f28500e1b358aae66ecf67dee9b4d5993bdc0113d5c6311a1a96cfa86:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^