Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 6480786fe06696b1f882a76bef5cbdd7909ce50c5e02d0e6935f45e904162582:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^