Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 382239571a81559689ad8a7bc161369499f12fda41e837517bb85dbd7616c206:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^