Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2b9926dd9617d217bc19d7865e70b32c8446b147ccaf33ce281414d1608be96b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^