Error map

next() called multiple times in navigation guard Vue Router: [Vue Router warn]: The "next" callback was called more than once in one navigation guard when going from "/a" to "/b"

Vue · layer 1, On your device

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1 · On your device 4 · Application & API 7 · Build & delivery
next() called multiple times in navigation guard — Vue Router: [Vue Router warn]: The "next" callback was called more than once in one navigation guard when going from "/a" to "/b" (Vue)next() call…Failed to resolve component — Vue: [Vue warn]: Failed to resolve component: x (Vue)Failed to resolve c…Avoid mutating a prop directly — Vue: [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders (Vue)Avoid mutating a pr…getActivePinia() was called but there was no active Pinia — Pinia: Error: [🍍]: "getActivePinia()" was called but there was no active Pinia. Are you trying to use a store before calling "app.use(pinia)"? (Vue)getActivePinia() wa…404 on page refresh (history mode) — Browser: Cannot GET /users/42 — refreshing a Vue Router history-mode page returns 404 (Vue)404 on page refresh…[Vue Router warn]: No match found for location with path — Vue Router: [Vue Router warn]: No match found for location with path "/users/42" (Vue)[Vue Router warn]: …NavigationDuplicated: Avoided redundant navigation to current location — Vue Router: Uncaught (in promise) NavigationDuplicated: Avoided redundant navigation to current location: "/home" (Vue)NavigationDuplicate…injection "Symbol(router)" not found / useRouter() called without router — Vue Router: [Vue warn]: injection "Symbol(router)" not found. / Cannot read properties of undefined (reading 'push') (Vue)injection "Symbol(r…refs on function components — Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()? (React)refs on function co…Property was accessed during render but is not defined — Vue: [Vue warn]: Property "x" was accessed during render but is not defined on instance (Vue)Property was access…[Vue warn]: Component is missing template or render function — Vue: [Vue warn]: Component is missing template or render function. (Vue)[Vue warn]: Compone…non-boolean attribute — Warning: Received `true` for a non-boolean attribute `x`. (React)non-boolean attribu…key is not a prop — Warning: `key` is not a prop. Trying to access it will result in `undefined` being returned. (React)key is not a propTS2741: Property is missing in type but required in type — TypeScript: error TS2741: Property 'email' is missing in type '{ name: string; }' but required in type 'User'. (TypeScript)TS2741: Property is…ENOENT — npm ERR! enoent ENOENT: no such file or directory, open '/path/package.json' (npm)ENOENTyarn not found — yarn: command not found (npm)yarn not foundTarget container is not a DOM element — Error: createRoot(...): Target container is not a DOM element. (React)Target container is…Unexpected token < — SyntaxError: Unexpected token '<' (HTML served instead of JavaScript) (JavaScript)Unexpected token <MIME type not executable — Refused to execute script from 'x' because its MIME type ('text/html') is not executable (JavaScript)MIME type not execu…ChunkLoadError — ChunkLoadError: Loading chunk 123 failed. (JavaScript)ChunkLoadErrorpath-to-regexp — TypeError: Missing parameter name at 1 (path-to-regexp) (Node.js)path-to-regexpNo routes matched — No routes matched location "/x" (React)No routes matchedNextRouter was not mounted — Error: NextRouter was not mounted. (React)NextRouter was not …You have a Server Component that imports next/router. Use next/navigation instead — Next.js: You have a Server Component that imports next/router. Use next/navigation instead (Next.js)You have a Server C…[Vue warn]: injection "x" not found — Vue: [Vue warn]: injection "theme" not found. (Vue)[Vue warn]: injecti…Vite: Failed to parse source / Unknown file extension ".vue" — Vite/Vue: [plugin:vite:import-analysis] Failed to parse source for import analysis — you may need to install appropriate plugins to handle the .vue file format (Vue)Vite: Failed to par…

Directly related (7)

Failed to resolve componentVue

Vue: [Vue warn]: Failed to resolve component: x

The template uses a component tag that isn’t registered or imported where it’s used.

Avoid mutating a prop directlyVue

Vue: [Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders

A child component assigned to a prop. Props flow one way — the parent owns the value.

getActivePinia() was called but there was no active PiniaVue

Pinia: Error: [🍍]: "getActivePinia()" was called but there was no active Pinia. Are you trying to use a store before calling "app.use(pinia)"?

A store was used before Pinia was installed or outside a component context (router guards, plain modules).

404 on page refresh (history mode)Vue

Browser: Cannot GET /users/42 — refreshing a Vue Router history-mode page returns 404

In history mode the server must serve `index.html` for all routes; otherwise direct URLs/refreshes hit non-existent files.

[Vue Router warn]: No match found for location with pathVue

Vue Router: [Vue Router warn]: No match found for location with path "/users/42"

The router has no route record matching that path (typo, missing route, or case/base issue).

NavigationDuplicated: Avoided redundant navigation to current locationVue

Vue Router: Uncaught (in promise) NavigationDuplicated: Avoided redundant navigation to current location: "/home"

`router.push` to the route you're already on, rejecting the promise (Vue Router 3.1+).

injection "Symbol(router)" not found / useRouter() called without routerVue

Vue Router: [Vue warn]: injection "Symbol(router)" not found. / Cannot read properties of undefined (reading 'push')

`useRouter()`/`useRoute()` ran in a component tree where the router plugin isn't installed.

Two steps away (18)

refs on function componentsReact

Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?

A ref was passed to a function component that doesn’t forward it.

Property was accessed during render but is not definedVue

Vue: [Vue warn]: Property "x" was accessed during render but is not defined on instance

The template references a variable/function that the component doesn’t expose.

[Vue warn]: Component is missing template or render functionVue

Vue: [Vue warn]: Component is missing template or render function.

A component object has neither `template` nor `render`, or an SFC import resolved wrongly.

non-boolean attributeReact

Warning: Received `true` for a non-boolean attribute `x`.

A boolean was passed to a DOM attribute that expects a string, or a custom prop leaked through to a DOM element.

key is not a propReact

Warning: `key` is not a prop. Trying to access it will result in `undefined` being returned.

A component tried to read props.key, which React reserves and never passes down.

TS2741: Property is missing in type but required in typeTypeScript

TypeScript: error TS2741: Property 'email' is missing in type '{ name: string; }' but required in type 'User'.

An object lacks one required property of the target type.

ENOENTnpm

npm ERR! enoent ENOENT: no such file or directory, open '/path/package.json'

npm ran in a directory without a package.json.

yarn not foundnpm

yarn: command not found

Yarn isn’t installed (or not enabled through Corepack) on this machine.

Target container is not a DOM elementReact

Error: createRoot(...): Target container is not a DOM element.

The element passed to createRoot/render doesn’t exist when the script runs.

Unexpected token <JavaScript

SyntaxError: Unexpected token '<' (HTML served instead of JavaScript)

The browser loaded a .js file but received HTML (an error page or the SPA index.html).

MIME type not executableJavaScript

Refused to execute script from 'x' because its MIME type ('text/html') is not executable

The browser fetched a script but the server labelled it text/html (usually an error page), so it refused to run it.

ChunkLoadErrorJavaScript

ChunkLoadError: Loading chunk 123 failed.

A lazily loaded JavaScript chunk couldn’t be downloaded — usually because a new deployment removed the old hashed files.

path-to-regexpNode.js

TypeError: Missing parameter name at 1 (path-to-regexp)

An Express 5 (path-to-regexp v8) route uses old wildcard syntax like '*' or '/:id?'.

No routes matchedReact

No routes matched location "/x"

React Router found no route definition for the current URL.

NextRouter was not mountedReact

Error: NextRouter was not mounted.

next/router’s useRouter was used inside the App Router (app/ directory), which uses next/navigation instead.

You have a Server Component that imports next/router. Use next/navigation insteadNext.js

Next.js: You have a Server Component that imports next/router. Use next/navigation instead

`next/router` (Pages Router) was imported in an App Router component.

[Vue warn]: injection "x" not foundVue

Vue: [Vue warn]: injection "theme" not found.

`inject("theme")` ran but no ancestor provided it.

Vite: Failed to parse source / Unknown file extension ".vue"Vue

Vite/Vue: [plugin:vite:import-analysis] Failed to parse source for import analysis — you may need to install appropriate plugins to handle the .vue file format

Vite can't process `.vue` files because the Vue plugin isn't installed/enabled.

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