Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 17d46f8be7105d68dac639d17f9f0967c8fd9476906259ddf5882aa90292b2dd:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^