Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> afba83c69139ef9a0e3bf455a449c93870779d7b75d802f762d9c83a233e705a:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^