Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> fef26b7cc5a71a74cb8da17954e4f03eee30116126c11979c25a39834b9afc02:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^