---
title: Error Codes
product: vercel
url: /docs/errors
canonical_url: "https://vercel.com/docs/errors"
last_updated: 2025-12-18
type: conceptual
prerequisites:
  []
related:
  - /docs/errors/error-list
summary: Use this guide to find specific solutions and insights for common Vercel errors.
install_vercel_plugin: npx plugins add vercel/vercel-plugin
---

# Error Codes

When developing your application with Vercel, you may encounter a variety of errors. They can reflect issues that happen with external providers such as domain services or internal problems at the level of your application's deployment or your usage of platform features.


<!-- docsgraph:related -->
## Related pages

> **For AI agents:** Follow these links to understand how this page connects to the rest of the Vercel ecosystem. For the full cross-link map (inbound, outbound, prerequisites, and semantic neighbors), see the .graph.md link below.

- [Vercel now supports customizing platform error pages](https://vercel.com/changelog/vercel-now-supports-customizing-platform-error-pages?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related)
- [View specific error codes in runtime logs](https://vercel.com/changelog/view-specific-error-codes-in-runtime-logs?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related)
- [How to debug 404 errors](https://vercel.com/kb/guide/how-to-debug-404-errors?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — Learn the systematic steps to identify and resolve 404 issues.
- [How do I resolve "ERR_SSL_PROTOCOL_ERROR" with Vercel?](https://vercel.com/kb/guide/resolve-err-ssl-protocol-error-with-vercel?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — Information about how to resolve the "ERR_SSL_PROTOCOL_ERROR" error with Vercel.
- [Why am I unable to login or signup to the Vercel platform?](https://vercel.com/kb/guide/why-can-i-not-signup?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — Information on what to do if you are experiencing issues logging in or signing up to the Vercel platform.
- [Custom error pages](https://vercel.com/docs/custom-error-pages?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — Learn how to configure custom error pages for 5xx server errors on Vercel.
- [Products](https://vercel.com/docs/products?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — Browse Vercel products for building, deploying, securing, observing, and scaling web applications.
- [REST API Errors](https://vercel.com/docs/rest-api/errors?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — General and specific errors you may encounter when using the Vercel REST API.
- [Troubleshooting Sign in with Vercel](https://vercel.com/docs/sign-in-with-vercel/troubleshooting?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — Learn how to troubleshoot common errors with Sign in with Vercel
- [Vercel fundamental concepts](https://vercel.com/docs/fundamentals?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=related) — Learn about the core concepts of Vercel

Full cross-link map for this page: [/docs/errors.graph.md](/docs/errors.graph.md?from=related&source_path=%2Fdocs%2Ferrors&source_site=vercel-docs&relationship=graph)
<!-- /docsgraph:related -->

For general error handling guidance, that covers dashboard related errors, see [General Errors](/docs/errors/error-list).

## Application errors

## Platform errors


---

[View full sitemap](/docs/sitemap)