[BUG] Missing 404 Page - Blank screen shown for invalid routes

[kunwarshivamjsr]

🐛 Bug Description

Visiting any invalid/unknown URL on the site shows a completely blank page with only the navbar visible. There is no 404 error page to guide the user back.

📸 Steps to Reproduce

1. Visit any invalid route e.g. https://study-mate-plus.vercel.app/anythingrandom
2. A blank white page is displayed

✅ Expected Behavior

A friendly 404 page should be shown with:

• A clear "Page Not Found" message
• A button to go back to Home

💡 Proposed Fix

Add a NotFound.js component and register it as a catch-all route in React Router:

<Route path="*" element={<NotFound />} />

🙋 Contribution

I would like to work on this under GSSoC'26 if approved!

[pixeltannu]

Hii @lovelymahor , I would like to work on this issue.
I am a GSSoC'26 contributor. Please assign it to me.

[kunwarshivamjsr]

Hey @pixeltannu, I have already submitted a PR (#498) for this issue. Please check it out! 🙌

[kunwarshivamjsr]

Hey @lovelymahor, just a heads up — another contributor is trying to claim issue #497, but I've already submitted a fix via this PR. Please review when you get a chance! 🙏

[pixeltannu]

Then I can't work on this issue

…

On Thu, 11 Jun, 2026, 12:59 am Shivam Kumar Kunwar, < ***@***.***> wrote: *kunwarshivamjsr* left a comment (lovelymahor/StudyMatePlus#497) <#497 (comment)> Hey @lovelymahor <https://github.com/lovelymahor>, just a heads up — another contributor is trying to claim issue #497 <#497>, but I've already submitted a fix via this PR. Please review when you get a chance! 🙏 — Reply to this email directly, view it on GitHub <#497?email_source=notifications&email_token=CEKHZKSELXTN75F7UL2JHS347GZIFA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINRXGM3TANJXGAZ2M4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJLDGN5XXIZLSL5RWY2LDNM#issuecomment-4673705703>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/CEKHZKS7U6HXA52K43IPX6L47GZIFAVCNFSNUABGKJSXA33TNF2G64TZHMYTAMRUGE3TIMJQGM5US43TOVSTWNBWGMZTSMZUGI2TRILWAI> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[kunwarshivamjsr]

Then I can't work on this issue
…

but mam I have already fixed it and created pull request as well

[pixeltannu]

Ok

…

On Thu, 11 Jun, 2026, 1:02 am Shivam Kumar Kunwar, ***@***.***> wrote: *kunwarshivamjsr* left a comment (lovelymahor/StudyMatePlus#497) <#497 (comment)> Then I can't work on this issue … <#m_-988225873217990756_> but mam I have already fixed it and created pull request as well — Reply to this email directly, view it on GitHub <#497?email_source=notifications&email_token=CEKHZKS5DZS6SO7D3N5VNY347GZWNA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINRXGM3TGNBTHEZKM4TFMFZW63VHNVSW45DJN5XKKZLWMVXHJLDGN5XXIZLSL5RWY2LDNM#issuecomment-4673734392>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/CEKHZKVPNUBHIJSGJO7G57D47GZWNAVCNFSNUABGKJSXA33TNF2G64TZHMYTAMRUGE3TIMJQGM5US43TOVSTWNBWGMZTSMZUGI2TRILWAI> . You are receiving this because you were mentioned.Message ID: ***@***.***>