Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> cc234cc0deffd07a6d6efb59bb6090fdf05395dc7b1e8a0b510aea4437272b30:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^