Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> b07dfcd405f62f591c7aca3c2bce3db3024e46a858add65af828f9f5fa460353:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^