Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e64ee9ac0319191b55ff43453fb2e08edaad8405636f0366b4e81824453ea716:15:8
   |
15 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^