Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> d89265a57d59f165439c78418580a1110634791b04e699f40040e281338b5747:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^