Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 59fb29e66eb139c2cbd17de0aa3e0fdce65d144112858ba76739c851d24ea2f1:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^