Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b5b1f50cca78bc178097edff81af3433a1882dd12390895aaad54e4f4c3ddac4:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^