Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dfa3b50761be1c11144e9ae47b55d1c26ca46bd5ad25785774d153c29d01447a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^