Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1d7c173b2b67a852f6291f334ee039cd525fb173b9f38a6ded9409846f30e877:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^