Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 26b8829db0a8b0371583aacc3516d1b5c0a456e5be2b2dd1299b99328f246519:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^