Fix: Vite Proxy Not Working — API Requests Not Forwarded or 404/502 Errors
How to fix Vite dev server proxy issues — proxy configuration in vite.config.ts, path rewriting, WebSocket proxying, HTTPS targets, and common misconfigurations.
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Fix: Vue Teleport Not Rendering — Content Not Appearing at Target Element
How to fix Vue Teleport not working — target element not found, SSR with Teleport, disabled prop, multiple Teleports to the same target, and timing issues.
Fix: Angular HTTP Interceptor Not Working — Requests Not Intercepted
How to fix Angular HTTP interceptors not triggering — provideHttpClient setup, functional interceptors, order of interceptors, excluding specific URLs, and error handling.
Fix: Angular Signals Not Updating — computed() and effect() Not Triggering
How to fix Angular Signals not updating — signal mutations, computed dependency tracking, effect() cleanup, toSignal() with Observables, and migrating from zone-based change detection.
Fix: Angular Standalone Component Error — Component is Not a Known Element
How to fix Angular standalone component errors — imports array, NgModule migration, RouterModule vs RouterLink, CommonModule replacement, and mixing standalone with module-based components.
Fix: AWS Lambda Environment Variable Not Set — undefined or Missing at Runtime
How to fix AWS Lambda environment variables not available — Lambda console config, CDK/SAM/Terraform setup, secrets from SSM Parameter Store, encrypted variables, and local testing.
Fix: AWS S3 CORS Error — Access to Fetch Blocked by CORS Policy
How to fix AWS S3 CORS errors — S3 bucket CORS configuration, pre-signed URL CORS, CloudFront CORS headers, OPTIONS preflight requests, and presigned POST uploads.
Fix: Tailwind CSS Classes Not Applying — Styles Missing in Production or Development
How to fix Tailwind CSS not applying styles — content config paths, JIT mode, dynamic class names, PostCSS setup, CDN vs build tool, and purging issues.
Fix: Docker Build ARG Not Available — ENV Variables Missing at Runtime
How to fix Docker ARG and ENV variable issues — build-time vs runtime scope, ARG before FROM, multi-stage build variable passing, secret handling, and .env file patterns.
Fix: Docker HEALTHCHECK Failing — Container Marked Unhealthy Despite Running
How to fix Docker HEALTHCHECK failures — command syntax, curl vs wget availability, start period, interval tuning, health check in docker-compose, and debugging unhealthy containers.
Fix: Express Rate Limit Not Working — express-rate-limit Requests Not Throttled
How to fix Express rate limiting not working — middleware order, trust proxy for reverse proxies, IP detection, store configuration, custom key generation, and bypassing issues.
Fix: GitHub Actions Secret Not Available — Environment Variable Empty in Workflow
How to fix GitHub Actions secrets that appear empty or undefined in workflows — secret scope, fork PR restrictions, environment protection rules, secret names, and OIDC alternatives.