deployment Errors
20 error patterns
Vercel Build Failed
Build failed.*Command.*exited with (\d+)
- •Check build logs for the failing command
- •Verify build command in vercel.json matches package.json
Vercel Function Size Limit Exceeded
Serverless Function.*exceeds the maximum size.*50.*MB
- •Use dynamic imports to reduce bundle size
- •Exclude unnecessary dependencies with .vercelignore
Vercel Edge Function Crash
Edge Function.*has crashed|EDGE_FUNCTION_INVOCATION_FAILED
- •Check for Node.js APIs not available in Edge runtime
- •Use edge-compatible packages only
Deployment Environment Variable Missing
Environment variable.*not found|Missing required env
- •Add variable in Vercel/Netlify project settings
- •Ensure variable is available for the correct environment
Deployment Redirect Loop
ERR_TOO_MANY_REDIRECTS|redirect loop detected
- •Check _redirects file for conflicting rules
- •Verify force HTTPS is not conflicting with existing rules
ISR Revalidation Failed
ISR.*revalidation failed|On-Demand Revalidation.*error
- •Verify revalidation API route returns correct status
- •Check revalidation token/secret is configured
Netlify Build Command Failed
Netlify.*build\.command failed
- •Check netlify.toml build.command configuration
- •Verify Node.js version in environment variables
Netlify Function Bundling Error
Function.*bundling.*error|Cannot find module
- •Check included_files in netlify.toml for native modules
- •Use esbuild-compatible dependencies
Deployment Branch Not Linked
Deploy failed.*branch.*is not linked
- •Link branch to project in dashboard settings
- •Verify git remote is correctly configured
Vercel Serverless Function Timeout
FUNCTION_INVOCATION_TIMEOUT
- •Optimize function to complete within time limit
- •Upgrade to Pro plan for 60s timeout
Deployment Output Size Exceeded
Output.*exceeds.*maximum.*allowed size
- •Remove unnecessary static assets from output
- •Configure output file tracing to minimize size
Netlify Plugin Build Hook Failed
Plugin.*failed during.*onPreBuild|onBuild|onPostBuild
- •Check plugin version compatibility
- •Review plugin configuration in netlify.toml
Vercel Middleware Error
Middleware.*error|middleware\.js.*failed
- •Check middleware uses Edge Runtime compatible APIs
- •Verify matcher config in middleware.ts
Deployment Build Cache Full
Cache.*quota exceeded|build cache.*full
- •Clear build cache in project settings
- •Add cache-specific ignore paths
Deployment Domain DNS Conflict
DNS.*CNAME.*conflict|domain.*already in use
- •Remove conflicting DNS records
- •Verify domain ownership with TXT record
Vercel Image Optimization Error
Image Optimization.*error|next/image.*failed
- •Check image source URL is accessible
- •Verify remotePatterns in next.config.js
Deployment Rate Limit
Exceeded maximum number of deployments per day
- •Wait for rate limit to reset
- •Batch changes into fewer deployments
Netlify Forms Submission Failed
forms.*submission.*failed|Form detection.*error
- •Ensure form has netlify attribute in HTML
- •Check form name matches between HTML and handler
ISR Compatibility Error
Incremental Static Regeneration is not compatible
- •Ensure hosting platform supports ISR
- •Use on-demand revalidation API instead
Serverless Function Connection Refused
Serverless Function.*ECONNREFUSED|fetch failed in function
- •Verify API URL is accessible from serverless environment
- •Check environment variables for correct API endpoints