Fix: Next.js 500 Internal Server Error
How to fix the Next.js 500 Internal Server Error by checking server logs, fixing getServerSideProps, API routes, environment variables, database connections, middleware, and deployment issues.
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Fix: Next.js API route 404 Not Found or not responding
How to fix Next.js API route 404 not found errors caused by wrong file paths, App Router vs Pages Router confusion, incorrect exports, and deployment issues.
Fix: Next.js Module not found: Can't resolve 'fs' (or 'path', 'crypto', 'net')
How to fix Next.js Module not found Can't resolve fs error caused by importing Node.js modules in client components, wrong server/client boundaries, and missing polyfills.
Fix: Nginx 413 Request Entity Too Large
How to fix the Nginx 413 Request Entity Too Large error when uploading files by adjusting client_max_body_size, PHP limits, Node.js body parser, proxy buffers, Docker ingress, and more.
Fix: Nginx 504 Gateway Timeout
How to fix the Nginx 504 Gateway Timeout error by tuning proxy timeout settings, fixing unresponsive upstream servers, adjusting PHP-FPM timeouts, and debugging with error logs.
Fix: Nginx SSL: error:0A00006C:SSL routines::bad key / SSL handshake failed
How to fix Nginx SSL handshake failed and certificate errors caused by mismatched keys, wrong certificate chain, expired certs, TLS version issues, and permission problems.
Fix: Nginx upstream timed out (110: Connection timed out) while reading response header
How to fix Nginx upstream timed out error caused by slow backend responses, proxy timeout settings, PHP-FPM hangs, and upstream server configuration issues.
Fix: Node.js ERR_MODULE_NOT_FOUND - Cannot find module
How to fix Node.js ERR_MODULE_NOT_FOUND when using ES modules, covering missing file extensions, directory imports, package.json exports, TypeScript paths, and ESM resolution differences.
Fix: npm ERR! enoent ENOENT: no such file or directory
How to fix the npm ENOENT no such file or directory error caused by missing package.json, wrong directory, corrupted node_modules, broken symlinks, and npm cache issues.
Fix: npm ERR! code E404 – Not Found (package not found in registry)
How to fix npm ERR code E404 not found error caused by typos, private registries, scoped packages, deleted packages, and authentication issues.
Fix: npm ERR! ENOTEMPTY: directory not empty, rename
How to fix npm ENOTEMPTY directory not empty error caused by corrupted cache, concurrent npm operations, stale node_modules, and Windows file locking issues.
Fix: npm WARN deprecated — inflight, glob, rimraf, and Other Package Warnings
npm WARN deprecated [email protected], [email protected], [email protected], @humanwhocodes — which warnings are safe to ignore, which need fixing, and exact steps to silence each one.