Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> ff8455df1e14551c5133cf883e897554f6ffc906a0b060bdb11f77faec54626f:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^