Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 1fa23d82c348e90d39c105b00647689b919ebf44f3c7a252621ae999e57e8468:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^