🐛 TinaDocs Bug - Client-side Exception When Deleting Docs Page Without Removing Navbar Link

[joshbermanssw]

Requested by: @joshbermanssw via YakShaver.ai 🦬
cc: @joshbermanssw, @Marxoz, @wicksipedia, @adamcogan

Hi Team!

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Pain

A client-side exception occurs on all pages using the navigation bar component when a docs page is deleted without removing its link from the navbar. This needs to be addressed to prevent errors across the site.

Acceptance Criteria

1. No client-side exceptions occur when a docs page is deleted without removing its link from the navbar.
2. The navigation bar should handle missing links gracefully.
3. Documentation is updated to include steps for safely deleting a docs page.

Reproduce Steps

1. Delete a docs page from the Tina.io repository.
2. Ensure the link to the deleted page remains in the navigation bar component.
3. Navigate to any page using the navigation bar.
4. Observe the client-side exception that occurs.

[joshbermanssw]

Reviewing w/ Nick C atm

[joshbermanssw]

@ncn-ssw started investigating this from the tinacms side, on the graphgql package. Blocked for now. tinacms/tinacms#5754