Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d62ad28868776ad02527f9905ea3acd510ae40683ffd914339fd59d1afe43da1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^