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low-code-react-app-b/docs/README.md
johndoe6345789 d15d527473 Generated by Spark: ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/src/main.tsx:1 Failed to load resource: the server responded with a status of 502 ()Understand this error 
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/src/main.tsx:1  Failed to load resource: the server responded with a status of 502 ()Understand this error
(index):5  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@react-refresh net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@react-refresh:1  Failed to load resource: the server responded with a status of 502 ()Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@react-refresh:1  Failed to load resource: the server responded with a status of 502 ()Understand this error
console.ts:4 FileSyncerContext: Established connection to file syncer
console.ts:4 FileSyncerContext: FileSyncer client created and connected
console.ts:4 FileSyncerContext: Codespaces file syncer started
console.ts:4 FileSyncerContext: Established connection to file syncer
console.ts:4 FileSyncerContext: FileSyncer client created and connected
console.ts:4 FileSyncerContext: Codespaces file syncer started
console.ts:4 connected to the Codespace
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:10  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@vite/client net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@vite/client:1  Failed to load resource: the server responded with a status of 502 ()Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:32  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/workspaces/spark-template/packages/spark-tools/dist/heartbeat.js net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/workspaces/spark-template/packages/spark-tools/dist/heartbeat.js:1  Failed to load resource: the server responded with a status of 502 ()Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:37  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/src/main.tsx net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/src/main.tsx:1  Failed to load resource: the server responded with a status of 502 ()Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:5  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@react-refresh net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@react-refresh:1  Failed to load resource: the server responded with a status of 502 ()Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:10  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@vite/client net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:32  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/workspaces/spark-template/packages/spark-tools/dist/heartbeat.js net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:37  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/src/main.tsx net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:5  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@react-refresh net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:10  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@vite/client net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:32  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/workspaces/spark-template/packages/spark-tools/dist/heartbeat.js net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:37  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/src/main.tsx net::ERR_ABORTED 502 (Bad Gateway)Understand this error
ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/:5  GET https://ubiquitous-couscous-97464jg9j6ggh79x5-5000.app.github.dev/@react-refresh net::ERR_ABORTED 502 (Bad Gateway)
2026-01-17 01:55:35 +00:00

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Error Fixes Summary

This directory contains documentation for various error fixes and troubleshooting guides.

Available Guides

502 Bad Gateway Error Fix

Comprehensive guide for fixing 502 Bad Gateway errors in Codespaces/local development.

Quick Fix:

# Run the diagnostic script
bash scripts/diagnose-502.sh

# Then restart the dev server
npm run kill
npm run dev

Key Changes Made:

  • ✅ Updated vite.config.ts to use port 5000 (was 5173)
  • ✅ Server already configured to bind to 0.0.0.0
  • ✅ Updated CI/CD workflows to use npm install instead of npm ci

Common Issues

1. Port Mismatch

Symptom: 502 errors when accessing Codespaces URL Cause: Vite running on different port than forwarded Fix: Ensure vite.config.ts uses port 5000

2. Workspace Dependencies

Symptom: CI/CD fails with EUNSUPPORTEDPROTOCOL Cause: npm ci doesn't support workspace protocol Fix: Use npm install or switch to pnpm

3. Server Not Accessible

Symptom: 502 errors even when server is running Cause: Server bound to localhost only Fix: Use host: '0.0.0.0' in vite.config.ts (already done)

4. MIME Type Errors

Symptom: Resources refused as wrong content type Cause: Usually secondary to 502 errors Fix: Fix 502 errors first, MIME issues resolve automatically

Quick Commands

# Check if server is running
lsof -i :5000

# Kill server on port 5000
npm run kill

# Start dev server
npm run dev

# Run diagnostics
bash scripts/diagnose-502.sh

# Check Codespaces ports
gh codespace ports

# Install dependencies (with workspace support)
npm install

File Changes Made

File Change Status
vite.config.ts Port 5173 → 5000 ✅ Fixed
.github/workflows/ci.yml npm ci → npm install (4 places) ✅ Fixed
.github/workflows/e2e-tests.yml npm ci → npm install ✅ Fixed
scripts/diagnose-502.sh Created diagnostic script ✅ New
docs/502_ERROR_FIX.md Created comprehensive guide ✅ New

Next Steps After Fixes

  1. Restart Development Server

    npm run kill  # Kill existing processes
npm run dev   # Start fresh

  2. Verify in Browser

    • Open Codespaces forwarded URL for port 5000
    • Should see React app load without errors
    • Check browser console - no 502s

  3. Test CI/CD

    • Push changes to trigger workflow
    • Verify npm install succeeds
    • Build should complete successfully

  4. Long-term Improvements

    • Consider migrating to pnpm for better workspace support
    • Add health check endpoint for monitoring
    • Document port configuration for team

Troubleshooting

If issues persist after applying fixes:

  1. Check the diagnostic output:

    bash scripts/diagnose-502.sh

  2. Verify Codespaces port forwarding:

    • Open Ports panel in VS Code
    • Ensure port 5000 is forwarded
    • Set visibility to Public or Private to Org

  3. Check server logs:

    • Look for errors in terminal where dev server runs
    • Common issues: missing deps, syntax errors, port conflicts

  4. Clear Vite cache:

    rm -rf node_modules/.vite
npm run dev

  5. Rebuild dependencies:

    rm -rf node_modules package-lock.json
npm install
npm run dev

Additional Resources

Support

If you continue experiencing issues:

  1. Check existing documentation in docs/ directory
  2. Review browser console for specific error messages
  3. Check server terminal logs for backend errors
  4. Verify all file changes were applied correctly
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