Troubleshooting

“Note changed since preview”

When you open “Generate preview”, the server remembers a hash of the note content.

If you edit the note in another tab (or auto-save happens) before confirming, confirmation will fail with a message like:

Note changed since preview. Please refresh the preview page.

Fix: go back, regenerate preview, and confirm again.

Card UUID issues

If you see an error about invalid UUID or duplicates:

• Ensure any uuid="..." values are valid UUID strings.
• Ensure no two <card> blocks share the same UUID within a single note.

Rebuild scheduling cache

If due times look wrong after an algorithm update:

1. Go to /profile
2. Click “Rebuild StudyState”

This recomputes scheduling state from your StudyRecord history.