Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a929448905a448af45a999fc961e3ad1fe4c822f384ec17c5be5d46157636512:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^