404 When Opening the Site After Deployment

Symptom

Opening https://inseokjeon-sec.github.io/SecureNomad/ shows the GitHub 404 page.

Cause

Checking the repository showed that .github/workflows/deploy.yml had not been pushed to GitHub.

• No .github folder in the repository file list
• No runs in the Actions tab

Without the workflow, the build and deployment never ran, so nothing was published to Pages and a 404 was returned.

Fix

1. Make sure deploy.yml is in .github/workflows/ at the project root (not created somewhere else, such as inside docs)
2. Commit → Push origin in GitHub Desktop (committing alone saves changes only on your PC)
3. Wait for a green check in the Actions tab, then open the site again

404 checklist

Where to check	Expected state
Settings → Pages → Source	GitHub Actions
Repository file list	.github/workflows/deploy.yml exists
Actions tab	Latest run has a green check
baseUrl	Matches the repository name, including case (/SecureNomad/)
URL	Includes the repository name at the end