Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 2467fcb049d351ec97a10af266e72c268c35dbb22295f4664eb65ba02de22848:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^