Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 00249036a74cb41251a93ffa7c5772b659b71d8543552c2d56684a1d7127db97:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^