Fix: Remove widgets metadata causing GitHub rendering issues

[SyedShahmeerAli12]

• Removed problematic widgets metadata from 11 affected notebooks
• Fixes issue Many Notebooks won't render in Github: "Invalid Notebook" #398: 'Invalid Notebook' error on GitHub
• Notebooks affected: 27, 31, 32, 33, 34, 35, 37, 40, 41, 44, 46
• Added comprehensive documentation of the fix
• All notebooks remain fully functional and now render correctly on GitHub

Closes #398

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[anakin87]

Hello and thanks for the fix!

Could you please remove FIX_DOCUMENTATION.md and instead explain in short what you did in a GitHub comment?

[SyedShahmeerAli12]

Ok Sir , I will do that in a bit

…

On Mon, 25 Aug 2025 at 13:55, Stefano Fiorucci ***@***.***> wrote: *anakin87* left a comment (deepset-ai/haystack-tutorials#410) <#410 (comment)> Hello and thanks for the fix! Could you please remove FIX_DOCUMENTATION.md and instead explain in short what you did in a GitHub comment? — Reply to this email directly, view it on GitHub <#410 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BJ3XETEDKGRIR4UD6EFJXLL3PLFPPAVCNFSM6AAAAACEV5GJC2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTEMJZGQYDEOBSGI> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[SyedShahmeerAli12]

What I did:
Identified 11 notebooks with malformed widgets metadata causing "Invalid Notebook" errors on GitHub
The issue was missing top-level state key in metadata.widgets structure
Removed the entire widgets metadata section from all affected notebooks (safe since it only stores display state, not functionality)
Result: All notebooks now render correctly on GitHub, 36K+ lines of problematic metadata removed, zero functional changes

Notebooks fixed: 27, 31, 32, 33, 34, 35, 37, 40, 41, 44, 46

Removed the documentation file as requested. Let me know if you need any other changes!

[anakin87]

This PR looks good.

Tests are failing because Secrets are not available in PRs running from forks.

I'll merge this PR. (If something breaks on the website, we can always revert it).