Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3e63871a03b7ef0914ddb7917919371bf8df92abce5aee7e15ebb17fa031a945:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^