Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 268033d4ca913bd32cc5033642e4354765e372594eb092e2a2d24aa3f32f470e:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^