Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4ff7be85da151102d47c286c26e5770a814a46e5ae23119befdcb767aa098884:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^