Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 58098d7aa4c2b01466bff26612a9f1ccf6d8a6a835aea4b3a1777aee20c29b58:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^