Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 49f3f96193db24b3389c7205a2017c46eccf6ebd837057d722c3e3dbbe249d00:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^