ERR-003low SeverityError Handling & Resilience
Custom 404 Not Found Page (not-found.tsx) Live
Default frameworks show generic 404 pages that break brand continuity and leave lost visitors with no navigation path back to the home page.
1-Click Fix Prompt for Cursor & Claude Code
Review my codebase for "Custom 404 Not Found Page (not-found.tsx) Live" (ERR-003). Issue: Default frameworks show generic 404 pages that break brand continuity and leave lost visitors with no navigation path back to the home page. Remediation required: Create a custom not-found.tsx page with helpful navigation links back to key application sections. Please: 1. Locate any occurrences of this issue across my repository. 2. Refactor the code to follow production standards without breaking existing functionality. 3. Provide a clear command or step to test and verify the fix.
Why AI Assistants Write This Bug
Default frameworks show generic 404 pages that break brand continuity and leave lost visitors with no navigation path back to the home page.
AI code generation prioritizes immediate syntax execution over production edge cases. When an assistant hits an undefined variable or strict type error, it frequently takes the path of least resistance rather than implementing standard pre-launch security patterns.
Code Comparison
Common AI Code PatternVulnerable
// Vulnerable AI-generated pattern for: Custom 404 Not Found Page (not-found.tsx) Live
// Problematic pattern: Default frameworks show generic 404 pages that break brand continuity and leave lost visitors with no navigation path back to the home page.Launch-Ready Fix
// Production-ready fix for: Custom 404 Not Found Page (not-found.tsx) Live
// Recommended remediation: Create a custom not-found.tsx page with helpful navigation links back to key application sections.Remediation & Verification Checklist
Remediation: Create a custom not-found.tsx page with helpful navigation links back to key application sections.
- Search your codebase for pattern matching "Custom 404 Not Found Page (not-found.tsx) Live".
- Apply the recommended remediation: Create a custom not-found.tsx page with helpful navigation links back to key application sections.
- Run local build and test commands to ensure no regressions.
- Verify in your browser or with curl that the issue is resolved.
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