Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> de99786e71d4765fa3dbdb0221575dafbc62c9374dfd6ec3872eee9c1585eece:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^