Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 8b2735c039075b5beb4499b9f0cff32bde013ec703677f7a3418e13f1881f487:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^