ErrLookup › withastro/astro
withastro/astro
The web framework for content-driven websites. ⭐️ Star to support our work! · TypeScript · 923 source files
Analyzed at e294953aa8 on 2026-09-09. 345 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Server address unavailable, this should not happen. Open an… | exception | error | astro, fonts, experimental, dev-server, virtual-module, race-condition, adapter |
| More than one JSX renderer is enabled. This will lead to… | console | warning | vue, jsx, multiple-renderers, config, react, preact, solid, astro-integration |
| [@astrojs/vue] appEntrypoint | console | warning | vue, app-entrypoint, default-export, dev-only-warning, astro-integration |
| [@astrojs/vue] Importing `getContainerRenderer` from… | console | warning | vue, deprecation, container-api, import-path, astro-integration |
| [transitions]: all view transition animations, including… | console | info | view-transitions, accessibility, reduced-motion, clientrouter, dev-only-warning |
| Your project is being built for Node.js | console | warning | vercel, nodejs, deprecation, runtime, build-warning, serverless, node18 |
| Usage of `vercel-edge-middleware.js` is deprecated. You can… | console | warning | vercel, middleware, deprecation, waituntil, edge-functions, build-warning |
| Be sure to follow the | console | info | upgrade, cli, changelog, breaking-changes, major-version |
| Could not find server component name | exception | error | server-islands, ssr, experimental, manifest |
| [Shiki] The language | console | warning | shiki, syntax-highlighting, markdown, code-fence, fallback, language-alias |
| Your project is being built for Node.js | console | warning | vercel, nodejs, runtime, beta, build-warning, serverless |
| FetchState not found on APIContext. This is an internal… | exception | error | internal, api-context, fetch-state, request-pipeline, duplicate-packages |
| Server error | http | error | ssr, node-adapter, unhandled-exception, http-500 |
| URL encoding depth exceeded the maximum number of decode… | exception | error | url-encoding, security, middleware, routing |
| Configured image service is not a local service | exception | error | images, image-service, configuration, dev-server, ssr |
| Your project is being built for Node.js | console | warning | vercel, nodejs, runtime, deprecation, build-warning, serverless |
| Could not optimize " " with the Cloudflare IMAGES binding (… | console | warning | cloudflare, images, prerender, fallback |
| `--ignore-lock` cannot be used together with | exception | error | cli, astro-dev, flags, lock-file, background-server |
| An error was encountered while creating the JSON schema for… | console | warning | content-collections, zod, json-schema, types |
| Invalid route — parameter name must match /^[a-zA-Z0-9_$]+$/ | exception | error | file-based-routing, routing, naming, route-parsing |
SessionStorageInitError Error when initializing session storage. `No driver was defined in the session… | exception | error | astro, sessions, configuration, session-driver, runtime |
| `security.csp. Directive` defines ` -src` resources ( ) as… | console | warning | csp, directives, security, config |
| Incomplete request | http | error | dev-server, http, middleware, vite |
NoAdapterInstalledServerIslands Cannot use server islands without an adapter. Please install and configure the… | exception | error | astro, server-islands, adapter, ssr, build-time, vite-plugin |
| [astro:cache] Background revalidation failed for | console | warning | cache, stale-while-revalidate, network, experimental |
IncorrectStrategyForI18n The function ` ` can only be used when the `i18n.routing.strategy` is set to… | exception | error | i18n, routing, middleware, config |
| Cyclic reference detected while serializing props for < | exception | error | serialization, props, client-directive, cyclic-reference |
| Missing parameter | exception | error | getstaticpaths, params, routing, build, typeerror |
InvalidI18nMiddlewareConfiguration The option `redirectToDefaultLocale` can be enabled only when… | exception | error | i18n, routing, middleware, config, infinite-redirect |
ExpectedImageOptions ** ** entry is missing an ID.
Invalid data type | error_code | error | content-collections, content-layer, loader, edge-case |
ContentLoaderReturnsInvalidId The content loader for the collection ** | error_code | error | content-collections, content-layer, loader, zod, entry-id |
| No cached compile metadata found for | exception | error | vite, virtual-modules, dev-server, cache |
| Several font families have been registered for the | console | warning | fonts, css-variable, configuration, experimental-assets |
UnsupportedConfigTransformError `transform()` functions in your content config must return valid JSON, or data… | exception | error | content-collections, loaders, transform, serialization, devalue |
ResponseSentError The response has already been sent to the browser and cannot be altered. | exception | error | cookies, response-lifecycle, streaming, ssr |
RewriteWithBodyUsed `Astro.rewrite()` cannot be used if the request body has already been read. If… | exception | error | astro, middleware, rewrite, request-body, streaming |
GenerateContentTypesError `astro sync` command failed to generate content collection types | exception | error | content-collections, codegen, sync, typescript |
| No data found for font family | console | warning | fonts, experimental-assets, configuration |
RedirectWithNoLocation A redirect must be given a location with the `Location` header. | exception | error | redirect, http-headers, prerender, build |
| Unable to render because it contains an undefined… | exception | critical | jsx, undefined-component, import, typo, circular-import |
| Couldn't parse tsconfig.json or jsconfig.json | console | warning | cli, astro-add, tsconfig, json |
| Astro couldn't find the correct page to render, probably… | exception | error | internal, dev-server, manifest, ssr |
| ** ** contains invalid content: Could not read partial file… | exception | error | markdoc, partials, file-resolution, content |
UnsupportedExternalRedirect The destination URL in the external redirect from | exception | error | redirects, config, routing, url-scheme |
| [MDX] A remark or rehype plugin attempted to inject invalid… | exception | error | mdx, frontmatter, remark-plugins, rehype-plugins, build |
| A resource was added to | console | warning | csp, security, directives |
InvalidRedirectDestination The redirect from " " to " " is invalid. The destination " " does not match any… | exception | error | redirects, config, dynamic-routes, build |
| Failed to start the Cloudflare prerender server. The… | exception | error | cloudflare, prerender, internal-invariant, preview-server |
| Expected a matching import for component | exception | error | mdx, islands, server-defer, client-directive, imports |
| ${issue.path.join('.')} ${issue.message + '.'} | console | warning | sitemap, zod, build, validation |
| Skipping cache for because response includes Set-Cookie. | console | error | |
| Failed to prerender | exception | error | cloudflare, prerender, render-error, workerd, build |
| the prerender server responded | exception | error | cloudflare, prerender, build, workerd, fetch |
MiddlewareNotAResponse Any data returned from middleware must be a valid `Response` object. | exception | error | middleware, response, instanceof, return-type |
| Bad request. | http | error | node-adapter, url-encoding, http-400 |
| The Sharp image service cannot run inside the workerd… | console | warning | cloudflare, images, sharp, workerd, native-module |
InvalidComponentArgs Invalid arguments passed to < | exception | error | astro, component, arguments, rendering |
| on `mdx( )` deprecated. Pass to `unified( )` from… | console | warning | mdx, markdown, deprecation, remark-plugins, rehype-plugins, config |
| [preview] cannot preview your app. | exception | error | preview, adapter, entrypoint, esm-import |
CannotDetermineWeightAndStyleFromFontFile An error occurred while determining the `weight` and `style` from local family | exception | error | fonts, build, font-metadata |
GetStaticPathsRequired `getStaticPaths()` function is required for dynamic routes. Make sure that you… | exception | error | astro, getstaticpaths, static-generation, prerendering, dynamic-routes |
CannotFetchFontFile An error occurred while fetching the font file from | exception | error | fonts, network, build, ci |
| Invalid component export path | exception | error | astro-island, hydration, security, prototype-pollution, browser |
| [@astrojs/node] Could not find the server directory | exception | error | node, bundling, deployment, import-meta-url |
| Template | exception | error | create-astro, cli, template, scaffolding |
| Incorrect value for | exception | error | preferences, cli, config, corruption |
MissingIndexForInternationalizationError Could not find index page. A root index page is required in order to create a… | exception | error | i18n, routing, config, build, localization |
ServerOnlyModule The "astro:config/server" module is only available server-side. | exception | error | config, server-only, virtual-module, bundling |
| Unexpected template-exit instruction without a matching… | exception | error | astro, compiler, internal-invariant, render-instructions, view-transitions |
| `markdown.remarkPlugins`, `markdown.rehypePlugins`, and… | exception | error | markdown, dependencies, upgrade, configuration |
| Process exited with code | exception | error | create-astro, subprocess, cli, scaffolding, install |
| Failed to get static images from the Cloudflare prerender… | exception | error | cloudflare, images, prerender, build, image-service |
| Astro components cannot be used in the browser. Tried to… | exception | error | client-bundle, astro-components, islands, dev |
| Invalid transition name | exception | error | view-transitions, transition-name, type-error |
| More than one JSX renderer is enabled. This will lead to… | console | warning | preact, jsx, multiple-frameworks, config, integrations |
| No problem! Find our official integrations at… | exception | info | cli, astro-add, interactive-prompt, package-registry, integrations |
| The font file referenced in your config has been deleted… | console | warning | fonts, dev-server, file-watching, experimental-assets |
| Unexpected problem adding heading IDs to Markdoc file. Did… | exception | error | markdoc, headings, render-context, config |
ReservedSlotName Unable to create a slot named | exception | error | slots, components, rendering, naming |
OnlyResponseCanBeReturned Route ` ` returned a ` `. Only a… | exception | error | astro, page, return-type, response, ssr |
| Parameter name must match /^[a-zA-Z0-9_$]+$/ | exception | error | cloudflare, routing, dynamic-routes, build, validation |
| Request body exceeds the configured limit of | exception | error | actions, server-islands, body-size-limit, http-413, security-config |
| Unable to render ! This component likely uses , but Astro… | exception | error | astro, ssr, framework-component, browser-globals, renderer |
DuplicateContentEntrySlugError ** ** contains multiple entries with the same slug: ` `. Slugs must be unique… | error_code | error | content-collections, glob-loader, duplicate-slug, file-naming |
LocalsNotAnObject `locals` can only be assigned to an object. Other values like numbers, strings… | exception | error | locals, type-validation, edge-middleware, adapter |
| Astro.site inside getStaticPaths is deprecated and will be… | console | warning | astro, getstaticpaths, deprecation, astro-site, import-meta-env |
PageNumberParamNotFound [paginate()] page number param | exception | error | paginate, getstaticpaths, file-based-routing, build |
| Your "vercel.json" config is not a valid json file. | console | warning | vercel, json, config, trailing-slash |
PrerenderDynamicEndpointPathCollide Could not render ` ` with an `undefined` param as the generated path will… | exception | error | endpoints, prerender, getstaticpaths, dynamic-routes, build |
| ** ** contains invalid content | exception | error | markdoc, validation, content-collections, build |
| Timeout | exception | error | create-astro, cli, child-process, timeout, npm-install |
| ⚠️ Astro could not optimize image | console | warning | astro, images, sharp, avif, codec, optimization, passthrough |
NoImageMetadata Could not process image metadata for | exception | error | astro, images, import, corrupt-file, metadata |
ActionNotFoundError The server received a request for an action named | exception | error | astro-actions, action-not-found, rpc-lookup, namespace |
| Internal Warning: route cache overwritten. | console | warning | internal, route-cache, getstaticpaths, build |
| Invalid route — rest parameter must be a standalone segment | exception | error | astro, routing, rest-params, dynamic-routes, build-time |
CacheProviderNotFound Could not resolve the cache provider | exception | error | cache, dependency-resolution, configuration |
| A collision will result in a hard error in following… | console | warning | routing, ssr, manifest, deprecation |
GetStaticPathsInvalidRouteParam Invalid `getStaticPaths()` route parameter for | exception | error | getstaticpaths, params, type-validation, build |
NoMatchingRenderer Unable to render ` `. There are renderers configured in your `astro.config.mjs`… | exception | error | astro, client-only, renderer, integration, hydration |