Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 738bedc663dd4b62abe38b3f872657f1621a34480277e2a285469c9ae753bca9:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^