I recently added support for private GitHub oneboxes, but that shouldn’t affect other sites. Generally we cannot onebox paywalled / private sites:
- FEATURE: Allow oneboxing private GitHub URLs by martin-brennan · Pull Request #27705 · discourse/discourse · GitHub
- FEATURE: Allow for multiple GitHub onebox tokens by martin-brennan · Pull Request #27887 · discourse/discourse · GitHub
These links don’t show for me either but the error shows in the preview:
https://www.nytimes.com/2024/07/10/magazine/food-documentaries-health.html