ErrLookup › vercel/next.js

vercel/next.js

The React Framework · JavaScript · 4,627 source files

Analyzed at 34433fd12e on 2026-09-20. 362 documented errors.

Code / MessageTypeSeverityTags
[Fast Refresh] performing full reload Fast Refresh will…
console error
Image with src " " has "placeholder='blur'" property but is…
exception error
The uncompressed postponed state is
console error
Route " ": Unexpected cache miss after cache warming phase…
console warning use-cache, prerender, cache-key, non-determinism, build-time
Route used `unstable_navigation()` inside a function cached…
exception error
Statically exporting a Next.js application via `next…
console error
createRevalidateDuringRenderError
exception error revalidation, server-actions, render-phase, nextjs
${expression}
exception error nextjs, app-router, use-search-params, prerender, static-generation, suspense
Route used `unstable_prefetch()` inside a function cached…
exception error
"url" parameter is valid but internal response is invalid
http error
Warning: viewport meta tags should not be used in…
console error
Next.js has blocked a javascript: URL as a security…
exception error
Route used `cookies()` inside a function cached with…
exception error
Route used `headers()` inside a function cached with…
exception error
throw new Error( );
exception error turbopack, code-generation, build, rust
Invalid response
exception error
`experimental.turbopackPluginRuntimeStrategy =…
console warning nodejs, worker-threads, turbopack, config, crash-risk
To use middleware you must provide a `hostname` and `port`…
exception error
Unexpected root span type
console error
Could not determine the latest stable Next.js version.
exception error nextjs, upgrade, npm-registry, network
No safe Next.js update is currently available.
exception error security, upgrade, versioning, semver
Invalid options detected
console error
NFT cannot handle filepath
exception error turbopack, nft, file-tracing, rust
Route used `unstable_navigation()` inside `after()` while…
exception error
Could not prepare adoption documents for
exception error nextjs, upgrade, network, docs
Could not prepare upgrade document
console warning upgrade, cli, migration, nextjs
Duplicate page detected.
console error
key-value tombstone type
validation error storage, corruption, cache, rust
Failed to reload dynamic routes:
console error
Prerendering is running in debug mode with…
console error
Mangling is disabled. Note: This may affect performance and…
console error
`cacheLife()` can only be called during App Router…
exception error
process.env.NEXT_DEPLOYMENT_ID is missing but…
exception error
inline value type claims a byte value, over the byte maximum
validation error data-corruption, cache, persistence, rust
The default export is not a React Component in
exception error
Route used `unstable_prefetch()` inside `after()` while…
exception error
Failed to fetch latest canary version.
console error
Missing `origin` header from a forwarded Server Actions…
console error
The " " option has been modified. It should be removed from…
console error
fixed key block for entries is the wrong size
validation error storage, corruption, cache, rust
${warning}
console warning upgrade, cli, deprecation, nextjs
Failed to update prerender cache for
console error
Invalid " " provided, expected a finite number of seconds…
validation error
NEXT_DYNAMIC_BAILOUT_REASON
exception error nextjs, next-dynamic, ssr-false, server-component, prerender, bailout
Could not check for security updates.
exception error security, schema-validation, api, github
revalidate: 0 configured
exception error
You should not access 'res' after getServerSideProps…
exception error
`experimental.durableUseCacheEntries: true` is only…
validation error config, turbopack, webpack, experimental-flag
${formatIssue(issue)}
console error
Internal imports only exist in reexports only mode when…
exception error bundler, esm, feature-flag, build
`getInitialProps` in Document component is not supported…
validation error
[Next.js Unhandled Rejection Filter]
console error
The default export is not a React Component in page
exception error
" .getInitialProps()" should resolve to an object with a…
exception error
Image with src " " has both "preload" and "loading='lazy'"…
exception error
getServerSideProps cannot be used with "output: export"…
exception error
Image with src " " has invalid "height" property. Expected…
exception error
[Fast Refresh] performing full reload because your…
console error
git exited with status
exception error git, cli, process-exit
missing required error components
exception error
Additional keys were returned from `getServerSideProps`…
validation error
Server Action " " was not found on the server. \nRead more…
exception error
Unsupported upgrade document
exception error nextjs, upgrade, internal-invariant
Invalid interception route
exception error
Fast Refresh had to perform a full reload
console error
Invalid URL
exception error
Server is approaching the used memory threshold…
console error
Invalid symlink
exception error turbopack, symlink, filesystem, rust
An unexpected response was received from the server.
exception error
`experimental.turbopackPluginRuntimeStrategy =…
console warning nodejs, worker-threads, turbopack, config, fallback
Unknown \`cacheLife()\` profile
exception error
Could not check Next.js security advisories. Continuing…
console warning network, security, upgrade, nextjs
The experimental.allowDevelopmentBuild option requires…
exception error
Unknown \`cacheLife()\` profile
exception error
`experimental.useTypeScriptCli` checks the complete…
console error
"url" parameter is not allowed
http error
Port is in use by process , using available port instead.
console error
Unsupported AI upgrade type
validation error nextjs, cli, upgrade, invalid-value
experimental.useLightningcss is set, but the setting is…
console error
Page " " is missing param " " in "generateStaticParams()"…
exception error
Middleware is not supported in minimal mode. Please remove…
exception error
The static directory has been deprecated in favor of the…
console error
Both and configured the locale ( ) but only one can. Remove…
console error
Could not prepare an upgrade retry. This command will…
console warning upgrade, cli, state-persistence, nextjs
Fast Refresh had to perform a full reload due to a runtime…
console error
Error serializing ` ` returned from ` ` in " ". Reason: ` `…
validation error
Invalid interception route
exception error
Invariant: PPR cannot be enabled in export mode
validation error
Cannot render page with path
console error
Decompressed resume data cache exceeded
exception error
Invalid profile provided
validation error
Environment doesn't support lazy compilation (requires…
exception error
`experimental. ` has been moved to ` `. Please update your…
console error
request failed with status
exception error
Route used " " inside a function cached with…
exception error
There were more warnings in other files. You can find a…
console error
Your project has `@next/font` installed as a dependency…
console error
key block too short for
validation error storage, corruption, cache, rust
You cannot define a route with the same specificity as a…
exception error
Fast Refresh had to perform a full reload when
console error