Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> dbef3f103b58d9eeccb727cd7f5af9e281f574747cd209294afbbb17f9c85324:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^