Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> df19d9fb36b31776948043285d0e2bbc9b9cfa48bcde421d2790f6881f52b641:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^