Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c646f0ddabee4010a671ddbad2eeb29e017f2670c746d7efff74290cc7ceee47:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^