Handle no ?source=... show message

[will-moore]

This fixes the blank page at https://ome.github.io/ome-ngff-validator/ (no source) and shows a helpful message and example link:

[netlify[bot]]

✅ Deploy Preview for ome-ngff-validator ready!

Name	Link
🔨 Latest commit	768caf819a89536f2151dd4f7ffacdc67e2086b0
🔍 Latest deploy log	https://app.netlify.com/sites/ome-ngff-validator/deploys/62b30e0e6e49e707c1b18cc4
😎 Deploy Preview	https://deploy-preview-8--ome-ngff-validator.netlify.app/
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

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[will-moore]

The deploy is green, but the link https://deploy-preview-8--ome-ngff-validator.netlify.app/ is 404 (with a link to trouble-shooting, which talks about missing index.html). But the logs at https://app.netlify.com/sites/ome-ngff-validator/deploys/62b2544dd0c63c0008abc6cd look good:

12:29:39 AM: dist/index.html                  5.18 KiB
12:29:39 AM: dist/assets/index.3acb94f6.css   5.83 KiB / gzip: 1.56 KiB
12:29:39 AM: dist/assets/index.3665eeca.js    160.64 KiB / gzip: 50.94 KiB`

[joshmoore]

Were there any particular configurations you set for the netlify deploy, @will-moore ?

[will-moore]

The only thing I remember doing was choosing the deploy URL (site name). I wonder if this is something that got broken in #7 (although I can't see why it would, but I could push a temp revert of that here and see if it helps...)

[will-moore]

Hmm - that didn't work... Removed temp commit.

Reading.. https://answers.netlify.com/t/support-guide-i-ve-deployed-my-site-but-i-still-see-page-not-found/125

Do you see the download button it mentions on any of the deploy log pages? e.g. https://app.netlify.com/sites/ome-ngff-validator/deploys/62b2e01d53b49800086d7a72 ?

I don't, but is that because I'm not logged-in as ome or because it isn't there? There seem to be a lot of related posts on the forums: I haven't seen anything that helps yet, but the netlify support seems good so we could try asking...

[will-moore]

That last commit was based on https://answers.netlify.com/t/site-cannot-be-accessed-broken-link-or-url-that-doesnt-exist/3729/27 but didn't fix it.

[joshmoore]

Do you see the download button it mentions on any of the deploy log pages?

No, no download button.

Edit: oops I missed the small down arrow.

[joshmoore]

The build is back! :tada:

[will-moore]

@joshmoore I'm not sure what went wrong with the latest gh-pages build after this PR was merged (https://github.com/ome/ome-ngff-validator/actions/runs/2542337160), but it failed so that this PR isn't deployed at https://ome.github.io/ome-ngff-validator/

[joshmoore]

A re-run fixed it: https://github.com/ome/ome-ngff-validator/actions/runs/2542337160