Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 5ce92f85d4a0299533608e8cf196768aaabbdae620e958bd89422199f80f7599:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^