Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 9cd5a2b6f7f7692eab44f5505069f845bd06472788467809de6fc8cb8f037d66:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^