Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 701ea08bdbee29e44558a5035ae90e5d9add02e8ef020cf2e752972c72801d66:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^