Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> c7e77841e4dc924120523d2380c8302e6ee1f212b5118b4a6cc18d575c37b399:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^