NaN in SO2Schedule score

Hi, when I use the default config to generate p_ and score_ in SO2Schedule, I noticed that some 0 values occur in p_, which subsequently lead to NaN values in score_.
I am wondering if this will affect training?

<img width="799" alt="截屏2024-08-14 16 55 32" src="https://github.com/user-attachments/assets/320aa000-2fa2-4195-929d-d497e55246fd">

Thank you for your help!

