Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 701cdafd285da6ca34f2cb4f8a15a42b853cae572c458974b56384f20c22380c:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^