Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 03c7d850abdcf0e989435efff6a3055675d666a98a62aaaed577d36361117bc5:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^