Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 07987c30c47e70cbbebe8af128d8259706f6a111ca3aa3aa3dbb5f739445d445:16:32
   |
16 |                                 var total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^