Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d6876ddad94f0750f58e1b4bca13370f13367430e70bc3e5c5a80b074330306a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^