Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1af576627584374a2a203c8e01d28278e856937b68bf06e8592128186a87223b:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^