Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1d53ef689f6a8058edb4251e55a79095d4a10e802f02f90f3d6fc9c445277367:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^