Fix: Docker Pull Error – Image Not Found or Manifest Unknown
How to fix Docker errors like 'manifest for image not found', 'repository does not exist', or 'pull access denied' when pulling or running images.
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Fix: VSCode ESLint Extension Not Working – No Errors Shown or Not Running
How to fix VSCode's ESLint extension when it stops highlighting errors, shows no output, or fails to start. Covers flat config, settings, and common misconfigurations.
Fix: TypeScript Cannot Find Module or Its Corresponding Type Declarations
How to fix the TypeScript error 'Cannot find module' or 'Could not find a declaration file for module' with proper type declarations and tsconfig settings.
Fix: Git Detached HEAD State – How to Reattach and Save Your Work
How to fix Git's detached HEAD state, reattach to a branch, and recover commits made while in detached HEAD.
Fix: Nginx 403 Forbidden – Permission Denied or Directory Index Disabled
How to fix the Nginx 403 Forbidden error caused by file permissions, missing index files, SELinux, or incorrect root path configuration.
Fix: pip No Matching Distribution Found for <package>
How to fix the pip error 'No matching distribution found' when installing Python packages, including version conflicts, platform issues, and index problems.
Fix: Redis ECONNREFUSED – Connection Refused on localhost:6379
How to fix the Redis ECONNREFUSED error when your application cannot connect to the Redis server on localhost:6379 or a remote host. Covers Redis not running, wrong host/port, Docker networking, firewall, AUTH required, maxclients, and TLS configuration.
Fix: AWS S3 Access Denied (403 Forbidden) when uploading, downloading, or listing
How to fix the 'Access Denied' (403 Forbidden) error in AWS S3 when uploading, downloading, listing, or managing objects using the CLI, SDK, or console.
Fix: PostgreSQL ERROR: duplicate key value violates unique constraint
How to fix 'duplicate key value violates unique constraint' in PostgreSQL by resetting sequences, using upserts, fixing bulk imports, and handling concurrent inserts.
Fix: Go declared and not used / imported and not used (compile error)
How to fix 'declared and not used' and 'imported and not used' compile errors in Go. Covers blank identifiers, goimports, gopls, build tags, conditional compilation, and common edge cases.
Fix: React useEffect runs infinitely (infinite loop / maximum update depth exceeded)
How to fix useEffect infinite loops in React — covers missing dependency arrays, referential equality, useCallback, unconditional setState, data fetching cleanup, event listeners, useRef, previous value comparison, and the exhaustive-deps lint rule.
Fix: E: Unable to locate package (apt-get install on Ubuntu/Debian)
How to fix the 'E: Unable to locate package' error in apt-get on Ubuntu and Debian, including apt update, missing repos, Docker images, PPA issues, and EOL releases.