Hooks cannot read property props of undefined 2) @react-navigation/stack (found: 5. js:608 Error tracking OPENED_MTCT_EDITOR TypeError: Cannot read properties of undefined (reading 'track') Asked 1 year ago Modified 10 months ago Viewed 983 times The prop value with an expression type of ChainExpression could not be resolved. I hit a rest call in action. log the property where it's defined, I see false not undefined. Jan 22, 2019 · I receive an array of objects as props within the Quote component I can access the props find but when I try to go deeper to the Object it said Cannot read property ‘id’ of undefined I have tried multiple things but can’t find out what’s wrong const arrOfQuotes = [ { id: 0, author: "Paulette Henry", body: "God is my Faith and Path that lay foundation upon my Life" }, { id: 1, author Jul 29, 2019 · TypeError: undefined is not iterable (cannot read property Symbol (Symbol. Feb 12, 2022 · React-Hook Form: Cannot read properties of undefined (reading 'field') Asked 3 years, 9 months ago Modified 1 year, 3 months ago Viewed 24k times Dec 15, 2021 · olegKusov changed the title [Bug]: Cannot read properties of undefined (reading 'pathname') [Bug]: Cannot read properties of undefined (reading 'pathname'). x and not v6) or (b) build your own wrapper function in v6 to pass in in the props. 1 Now it is triggering an error: Uncaught (in promise) TypeError: Cannot read property 'props' of undefined Why? What is the correct way to add a CSS class to the default Gutenberg button <a> tag? I would expect the HTML output to be like this: 要解决”Cannot read property ‘props’ of undefined”错误，我们需要仔细检查代码，确保组件的数据或props被正确地初始化。 首先，我们应该检查父组件是否正确地传递了props给子组件。 Nov 24, 2023 · What version of React Router are you using? 6. Jul 23, 2025 · The "TypeError: Cannot read property ‘productID’ of undefined" error in React. Dec 17, 2024 · TypeError: Cannot read properties of undefined (reading 'unsubscribe') with react hook form and React latest version in RTL test cases Asked 11 months ago Modified 10 months ago Viewed 102 times Jun 23, 2023 · TypeError: Cannot read property 'map' of undefined, in react hooks crud application Asked by Milan Hobbs on 2023-06-23 To get the url parameter from a current route, we can use the useParams () hook in react router v5. /js/testData. Aug 9, 2021 · React Hooks Find by ID returning Cannot read property 'params' of undefined Asked 3 years, 7 months ago Modified 3 years, 7 months ago Viewed 530 times Jan 30, 2021 · Issue The Deposits component isn't receiving a history prop to do a push from. js file, and then reducer will update the state of store. 11, latest Mar 25, 2021 · react TypeError: Cannot read property 'id' of undefined Asked 4 years, 8 months ago Modified 4 years, 8 months ago Viewed 6k times Nov 9, 2020 · Bug: eslint-plugin-react-hooks: Cannot read property 'type' of undefined at analyzePropertyChain #20204 Mar 25, 2020 · Cannot read property 'props' of undefined #7133 Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. 11. js:2215 TypeError: Cannot read property 'short_name' of undefined This seems to result from my computed variable countryName defined as this. js. Apr 10, 2019 · I would like to make app which you can write your username of GitHub Acount and show your repositories on next page. By using proper initialization, checking for property, and by conditional rendering, you can effectively handle and prevent such errors. 4. Apr 7, 2024 · # Ref returns undefined or null in React [Solved] A React ref most commonly returns undefined or null when we try to access its current property before its corresponding DOM element is rendered. 3. However then none of the Livewire methods works (wire:click etc. short_name. Sep 30, 2024 · One of the main issues in your fake shopping cart project is successfully transmitting props from parent to child components. Jul 12, 2017 · When I try to pass language dynamically from select dropdown list, It shows following error: Uncaught TypeError: Cannot read property 'properties' of undefined at changeLanguage where changeLangua Aug 22, 2019 · 问题描述 如图, 复现步骤 [复现问题的步骤] 编写vue界面后,刷新小程序就报错 预期结果 刷新后编译不报错 实际结果 自动刷新时不时报错 TypeError: Cannot read property 'call' of undefined . grid in Grid likewise shows undefined, despite being correctly updated in Controls. Now, we can access the :id param value from a Users component using the useParams () hook. 2. Here are the common causes and solutions: Jan 14, 2025 · By properly initializing objects, utilizing modern JavaScript features like optional chaining, providing default values, validating function parameters, and avoiding typographical errors, you can effectively prevent and fix this error. The key lies in meticulous debugging and ensuring that all Jun 10, 2020 · React hooks: useState/context; Cannot read property 'avatar' of undefined/How to update a nested object Asked 4 years, 6 months ago Modified 4 years, 6 months ago Viewed 2k times Jul 5, 2019 · Hey guys, I've been switching the use the new auth0 login with hooks, when I try to do something very similar to the example, I keep encountering the following error: TypeError: Cannot read property 'loginWithRedirect' of undefined It ap My data works fine and populates the template, however I get warning: vue. Press space again to drop the item in its new position, or press escape to cancel. route props (history, location, and match) also no longer exist, the routed components must use the React hooks to access them now. Dec 16, 2020 · 编译失败Cannot read property 'hooks' of undefined #13 Open Ale-cc opened this issue on Sep 30, 2020 · 2 comments Ale-cc commented on Sep 30, 2020 • Jul 17, 2023 · This tutorial explains how to fix TypeError: Cannot read properties of undefined (reading '0') in JavaScript Jun 5, 2020 · This is the hook's dependency array. Apr 7, 2024 · The "Cannot read property 'props' of undefined" error occurs when a class method is called without having the correct context bound to the this keyword. The Jan 5, 2022 · 本文档介绍了在小程序中遇到的TypeError: Cannot read property 'xxx' of undefined错误的原因及解决方案。问题源于尝试访问未定义对象的属性。解决方法是检查并确保在访问属性前对象已正确初始化。升级小程序版本可以解决此类问题，避免因版本不兼容导致的对象未定义情况。 Aug 13, 2020 · Changing to @storybook/client-api atleast fixed the second error Cannot read property 'getCurrentStoryData' of undefined that I was seeing. Here is the component/form that is triggering the event (thus invoking method on binded parent component Dec 3, 2019 · You can only use useParams in a component that is a child of your Router component, but App is the parent in your case. That last message should indicate that it is reading map property from an undefined object, if you search in your code there is data. 5. js:608 Error tracking OPENED_MTCT_EDITOR TypeError: Cannot read properties of undefined (reading 'track') Asked 1 year ago Modified 10 months ago Viewed 983 times Oct 17, 2017 · Error in mounted hook: "TypeError: Cannot read property '$el' of undefined" #107 Closed dwonisch opened this issue on Oct 17, 2017 · 3 comments dwonisch commented on Oct 17, 2017 • When I run this browser alert me with that : Cannot read property 'map' of undefined. no enter keypress is needed). React Redux - TypeError: Cannot read property 'props' of undefined Asked 4 years, 5 months ago Modified 4 years, 5 months ago Viewed 523 times Sep 27, 2024 · 本文聚焦React开发中常见的TypeError: Cannot read property ‘props’ of undefined问题。深入分析了上下文丢失、函数组件误用等Bug原因，给出使用箭头函数、构造函数绑定等解决方法，还分享了使用ES6箭头函数、避免在函数组件用this等避免策略。 Feb 21, 2019 · useTranslation will try to resolve the i18n object via props, context, or global i18n that is set via i18n. Please file issue to get this fixed immediately. In other words the function (being an arrow function that does not redefine this) takes the this from the outer scope (the scope of the class), however, because arrow functions are anonymous functions, you name it by assigning it to a name property. 0. Dec 25, 2020 · Functional component to class component Error: Cannot read property 'id' of undefined Asked 4 years, 3 months ago Modified 4 years, 2 months ago Viewed 190 times Nov 7, 2021 · Cannot read properties of undefined (reading 'location') Asked 4 years ago Modified 3 years, 5 months ago Viewed 34k times Apr 16, 2021 · The reason this is not an issue when you have 2+ cards, is because with more than 1 card, you execute showList function that returns a mapped array of <Show addRemoveFav={addRemoveFav} key={show. Top Results From Across the Web Reactjs : TypeError: Cannot read property 'propTypes' of I was importing Collapsible as an existing variable/object before. Feb 29, 2024 · When you see the message “Cannot read property ‘getState’ of undefined” in your console, it usually indicates that there’s an issue with how Redux is being integrated into your React application. The “Cannot destructure property ‘xxx’ of ‘undefined React Hooks: useState gives error: TypeError: undefined is not iterable (cannot read property Symbol (Symbol. 11) Can you verify that the issue still exists after upgrading to the latest versions of these packages? Jul 18, 2020 · React hooks - cannot read property map of undefined Asked 4 years, 7 months ago Modified 4 years, 7 months ago Viewed 77 times Apr 7, 2024 · The error "Cannot read property 'pathname' of undefined" occurs when we don't set the `to` prop on a `Link` component in React router. Hooks run on each render cycle, and if any values in the dependency array have updated it triggers the hook's callback, in this case, the effect to get weather data when the city prop updates. Nov 8, 2023 · TypeError: Cannot read Property ‘push’ of Undefined in JavaScript When you’re dealing with JavaScript arrays, it’s crucial to exercise caution and ensure that you don’t accidentally use methods like push(), pop(), shift(), unshift(), or splice() on a variable that you intend to be an array but currently has an undefined value. history} other props /> Or you can just use the useHistory react hook from react-router-dom inside your Deposits component. 9. use (uView)注册组件，成功避免了错误发生。 🌍💻问题点解决方法注意事项错误的this指向使用bind或箭头函数确保方法中的this指向组件实例类组件中的props访问明确this绑定使用构造函数中的bind或类属性箭头函数函数组件的使用转向函数组件和Hooks避免this的复杂性。 _cannot read property 'props' of undefined Jan 4, 2022 · Thus, the correct answer has already been given in Muhammad's comment here: React this. 3 Steps to Reproduce import React, {lazy, Suspense} from 'react'; import {createHashRouter, RouterProvider} from 'react-router-dom'; import Home from Dec 17, 2023 · 在 JavaScript 中，“cannot read property of undefined”错误是一种常见的错误。本文将探讨此错误的 5 种解决方案，帮助您快速解决此问题。 My data works fine and populates the template, however I get warning: vue. In this article, we will learn how to solve this error effectively and prevent it from happening in your JavaScript programs. Jan 19, 2025 · Troubleshoot Vue. Mar 27, 2025 · Fixing “Cannot read property ‘props’ of undefined” Error This error occurs when you try to access this. params. Yet as I try to invoke method of parent (actually grandparent) component via onChange event, I keep getting Uncaught TypeError: Cannot read property 'props' of undefined. Aug 9, 2020 · Cannot read property '__H' of undefined when I try to use mjs-version of the "hooks" package #2690 New issue Closed Dec 8, 2020 · Are you sure you're correctly passing props to this component? Problem is that your people constant is undefined, which means that you probably don't have that property inside props object. Import it: import {useParams} from 'react-router-dom' In place of const userId = props useFormikContext() is a custom React hook that will return all Formik state and helpers via React Context. Cannot read property 'props' of undefined It seems that the prop updateBuildings cannot be read when it is inside the renderBuildings method and I'm not sure what is causing this. As soon as you type a 6 digit number, the form will automatically submit (i. Why? Jul 16, 2019 · 0 From the code i would assume that your are rendering LoginScreen inside your App. ) Mar 10, 2020 · 👍 2 JollyGo changed the title 在按需加载的模式下，从文件递归生产菜单出现：TypeError: Cannot read property 'propsData' of undefined 在按需加载的模式下，从文件递归生成菜单时出现：TypeError: Cannot read property 'propsData' of undefined on Mar 10, 2020 Jul 5, 2019 · Error in mounted hook: "TypeError: Cannot read property 'get' of undefined" while using candlestcik chart with Echarts/ #357 Closed theshashiverma opened this issue on Jul 5, 2019 · 3 comments TypeError: Cannot read property 'map' of undefined hi all, I am new in React js. I can’t read property of state “data” or “user” in … Aug 10, 2021 · It seems either paletteName isn't a property on the elements in the palettes prop, or value is undefined. iterator)) i have this error and i used shadcn ui library combobox code is "use client"; Aug 1, 2020 · undefined is not iterable (cannot read property Symbol (Symbol. iterator)) #11756 Oct 23, 2023 · Introduction Understanding and resolving the TypeError: Cannot Read Properties of Undefined (Reading Prototype) in React TypeScript with Express involves digging into your coding structure. e. Sep 1, 2022 · Moreover, reading 'map' helps you know which object is it reading. The " Cannot read property of undefined " error is a common error in JavaScript that occurs when you try to access a property or method of a variable that is undefined. Import it: import {useParams} from 'react-router-dom' In place of const userId = props 要解决”Cannot read property ‘props’ of undefined”错误，我们需要仔细检查代码，确保组件的数据或props被正确地初始化。 首先，我们应该检查父组件是否正确地传递了props给子组件。. match is undefined Or, to reiterate, if you want to continue using class-based components, either (a) use the version of the tool intended for it (thus, v5. Tried for hours to find some sort Oct 3, 2019 · Cannot read property 'history' of undefined (useHistory hook of React Router 5) Asked 6 years ago Modified 3 years, 11 months ago Viewed 59k times Aug 15, 2021 · TypeError: Cannot read property 'title' and map of undefined React Hooks props problem Asked 3 years, 3 months ago Modified 3 years, 3 months ago Viewed 62 times Dec 9, 2021 · The Route components no longer use component or render props, the element prop that is passed a valid JSX literal replaced them. Jun 2, 2018 · Recently, I ran into some problems while attempting to snapshot test my React code. React Hooks Problem: Unhandled Rejection (TypeError): Cannot read property 'signup' of undefined Asked 5 years, 4 months ago Modified 5 years, 4 months ago Viewed 2k times Jun 14, 2020 · I'm trying to use context with hooks to manage authentication in my react app. state. vue bus error: Cannot read property 'apply' of undefined #4886 Mar 4, 2020 · Referencing MongoDB ObjectIDs in React with hooks causes TypeError: Cannot read property '$oid' of undefined Jan 16, 2023 · The versions mentioned in the issue for the following packages differ from the latest versions on npm: @react-navigation/drawer (found: 5. props before the component is properly initialized. iterator)) Aug 13, 2013 · I get the error Uncaught TypeError: Cannot read property 'propHooks' of undefined When using color animation in jQuery. 2, latest: 6. 5 #19243 Closed lencioni opened this issue on Jul 2, 2020 · 3 comments · Fixed by #19260 Contributor Jun 28, 2019 · 0 So I am following a react tutorial on props validation and I am trying to display different types of data on a web page and I am getting an error saying that array is undefined TypeError: Cannot read property 'array' of undefined Jun 18, 2020 · 6 The error is clear. React Router 5 Apr 3, 2024 · How do you fix undefined properties Cannot be read? Safeguarding Against Undefined with Default Values To prevent the "cannot read property" error, you can set default values for variables or use the logical OR operator (||) to provide a fallback value when the expected one is undefined. The problem is that 'items' props in the ServiceItem component doesn't read 'items' as array but it is array, so I don't know where is the problem. entries () to this. matchMedia is not a function Jun 19, 2023 · TypeError: Cannot read property ‘property’ of undefined エラー内容 解決法 Maximum update depth exceeded エラー内容 解決法 Invariant violation: A component is changing an uncontrolled input of type ‘text’ to be controlled エラー内容 解決法 TypeError: Cannot read property ‘map’ of undefined エラー内容 Dec 15, 2021 · olegKusov changed the title [Bug]: Cannot read properties of undefined (reading 'pathname') [Bug]: Cannot read properties of undefined (reading 'pathname'). iterator)) i have this error and i used shadcn ui library combobox code is "use client"; Aug 5, 2022 · The version of react-router-dom you are using is v6. But I have problem with GlobalStore (Context API). Learn causes, solutions, and best practices to resolve this issue. Jul 21, 2019 · I am trying to set a url parameter before making an api call to my wordpress backend but i'm getting Error in created hook: "TypeError: Cannot read property 'then' of undefined". id . Aug 5, 2022 · The version of react-router-dom you are using is v6. I'm getting the error TypeError: Cannot destructure property 'isAuthenticated' of 'Object()()' as it is undefined. Since value seems to be defined above in the other validations it seems that palettes isn't the value you expect. show_id} show={show} /> with Show components that have addRemoveFav property. Dec 9, 2021 · The Route components no longer use component or render props, the element prop that is passed a valid JSX literal replaced them. Cannot read property 'params' of undefined Passing props when simply calling component={} seems to work fine but not in a render function. Jun 2, 2025 · This means the FileDisplay component is likely to be initially created with a props value equal to [] (fileList default value) which will result in props. countries [this. Sep 26, 2021 · To fix the "Uncaught TypeError: Cannot read property ‘push’ of undefined" error when developing apps with React Router, we can get the history object from the useHistory hook. Jul 2, 2020 · Bug: Cannot read property 'references' of undefined in eslint-plugin-react-hooks v4. here is the snippet: shorten(){ let re Feb 28, 2022 · I don't understand why control props of Controller component is optional when we got TypeError: Cannot read properties of null (reading 'control') if we give undefined 🤔 . Solution Assuming your PrivateRoute component passes the route props through to rendered components then you can pass history from Home to Deposits <Deposits history={props. const history Apr 7, 2024 · # Ref returns undefined or null in React [Solved] A React ref most commonly returns undefined or null when we try to access its current property before its corresponding DOM element is rendered. To get around this, access the ref in the useEffect hook or when an event is triggered. selected]. Read more > I had added . stringify(props. Oct 26, 2024 · hook. Dec 25, 2018 · how to setup react-i18n with hooks, getting TypeError: Cannot read property '0' of undefined Asked 6 years, 4 months ago Modified 6 years, 4 months ago Viewed 6k times how to setup react-i18n with hooks, getting TypeError: Cannot read property '0' of undefined TypeError: Cannot read property 'prototype' of undefined in react while running npm start Oct 09, 2024 TypeError: Cannot read properties of undefined (reading 'search')I am completely new to this. js often occurs while attempting to access properties of undefined objects. , yet when I console. pubsubtopics but it's still complaining that "Cannot read property 'entries' of undefined". Aug 27, 2016 · 48 I'm making very simple react app. map and data seems to be undefined; make sure to validate it before calling map function if it can be possibly null or undefined or even not an array. While dragging, use the arrow keys to move the item. 1. In this version (which has lots of breaking changes you need to keep an eye out for), the params object is not accessible since route props are not passed to the element /component. To define a method mixin to be exported, you'd export an object with a methods prop that contains your desired method (much like declaring a new component options with object syntax): // . I can’t read property of state “data” or “user” in … Feb 13, 2021 · addBlockClass ); I have this code and it was working until the update of Wordpress to 5. prop [0] returning undefined. To solve the error, define the class method as an arrow function or use the bind method in the classes' constructor method. Dec 22, 2024 · 猫头虎 分享已解决Bug || Cannot read property 'state' of undefined 解决方案 🎉 💡 今天有粉丝问： 猫哥，我在使用 React 开发项目时遇到了 Cannot read property 'state' of undefined 的报错，怎么办？ 👋 哈喽，大家好！我是 猫头虎 🐯。 今天咱们就来解决这个开发中常见的 React 报错问题 —— Cannot read property 'state' of Nov 12, 2020 · TypeError: Cannot read property 'getPosts' of undefined - useQuery hook, react Functional Components Asked 4 years, 11 months ago Modified 3 years, 11 months ago Viewed 2k times Sep 17, 2019 · Then I don't see the error ( [Vue warn]: Error in created hook: "TypeError: Cannot read property 'on' of undefined") anymore. 7) @react-navigation/native (found: 5. I am creating a project using react js with redux. const history Uncaught TypeError: Cannot read properties of undefined (reading 'tiles') Logging props. In this post, we'll explore why this error occurs specifically when using default props in custom hooks and how to effectively resolve it. I think the issue here is that since the selectedTrack is loaded asynchronously, when it is accessed from the context, it is undefined (you can get around the TrackContext being undefined by passing in a default value in the createContext call). Apr 16, 2022 · To pick up a draggable item, press the space bar. use(initReactI18next) Here is the problem, in the hook. Aug 9, 2020 · Cannot read property '__H' of undefined when I try to use mjs-version of the "hooks" package #2690 New issue Closed Conclusion The TypeError: Cannot read properties of undefined is a common stumbling block when working with custom hooks in React. prop[0]. 6. name)} I get an error: Cannot read properties of undefined (reading 'name') TypeError: Cannot read properties of undefined (reading 'name') Dec 20, 2022 · Couldn't find version numbers for the following packages in the issue: react-native-tab-view flipper-plugin-react-navigation Can you update the issue to include version numbers for those packages? The version numbers must match the format 1. match. Dec 17, 2023 · I set up the theme provider from styled component, then I created a portal, and I elements from my portal cant access to the provider This is my provider: Feb 6, 2020 · I am trying to create a search feature using react hooks but it keeps returning the error: Cannot read Property of Undefined on the updateSearch function whenever I type in the input field. This common issue often stems from an improper reference to variables, objects or function names, causing a disruption in backend operations. props. /js Jan 4, 2022 · Thus, the correct answer has already been given in Muhammad's comment here: React this. Jun 18, 2020 · 6 The error is clear. I've tried declaring data: and props: short_name and inside of the country object; nothing I try solves the warning. Seems like the state is getting cleared out somewhere. React Router 5 Jan 22, 2019 · I receive an array of objects as props within the Quote component I can access the props find but when I try to go deeper to the Object it said Cannot read property ‘id’ of undefined I have tried multiple things but can’t find out what’s wrong const arrOfQuotes = [ { id: 0, author: "Paulette Henry", body: "God is my Faith and Path that lay foundation upon my Life" }, { id: 1, author Jul 29, 2019 · TypeError: undefined is not iterable (cannot read property Symbol (Symbol. In React router v4, you can access it using the props. After reading through docs and few tutorials i realised . 'items' props is the 'items' array put in the service variable in ServiceSection component. I had added . The versions mentioned in the issue for the following packages differ from the latest versions on npm: @react-navigation/native (found: 6. So at this point, the only thing blocking me from upgrading to v6 is my use case of wrapping a component using useArgs hook in another function / component / story. Example Here's an example of a form that works similarly to Stripe's 2-factor verification form. use (uView)注册组件，成功避免了错误发生。 Oct 10, 2020 · testData. Any ideas? I've probably made some obvious rookie mistake, but I haven't been able to figure it out on my own or find any similar problems/solutions when googling. Aug 31, 2024 · The issue here is that you are passing functions to the useState hook and state updater functions which are being interpreted as lazy initialization functions (in the case of useState(PropertyList);) and functional state updates (in the case of setActiveComponent(sidebarViews[0])). React Router 6 on Dec 15, 2021 Sep 26, 2024 · 在uni-app项目中，使用u-tabs组件时遇到页面加载错误。经过排查，发现移除u-tabs后错误消失。为解决此问题，参考其他程序，在main. 3, latest: 6. Doing that, you are not putting LoginScreen inside any navigator, making this. <script I am trying to shorten a string in a react component I got from an API call in react but I get TypeError: Cannot read property 'substring' of undefined. The Router component injects the context containing the match into the tree below it which will be read by the useParams hook by internally using the useContext hook. js export default { methods: { populateTestData() { // } } } Then your component would use the mixin like this: import myMixin from '. How can I avoid 'cannot read property of undefined' errors? Asked 12 years, 9 months ago Modified 8 months ago Viewed 589k times Nov 29, 2020 · I would either go with hooks and access the store values or dispatch you need via hooks or use connect and access via details/props. You're not sending any props to the App component, so { steps } is undefined, and you can't destructure the property "steps" because it's undefined. navigation equal to undefined. Consider, we have a route like this in our react app. js does not correctly define a Vue mixin. window. Nov 5, 2022 · undefined类型错误是一个常见的JavaScript错误，通常是由对象属性不存在导致的。本文将详细解释undefined类型错误产生的原因，并提供解决方法。 Sep 6, 2021 · When I try to run this code it gives me this error: × TypeError: Cannot read properties of undefined (reading 'map') Why does it happen? How can I make it work? Jan 7, 2023 · I had first: useBreakpoint hook Cannot read property 'details' of undefined when run unit test with Jest Then I got: TypeError: env. 14. The prop value with an expression type of ChainExpression could not be resolved. js文件中引入并使用uView库，通过Vue. js Cannot Read Property X of Undefined error with this guide. Dec 16, 2020 · I try to change again and the following error crashes: 'TypeError: Cannot assign to read only property 'background' of object '#'' What could this be related to and how can this be solved? Dec 15, 2020 · Cannot read property 'pathname' of undefined in React-Hooks Asked 4 years, 4 months ago Modified 4 years, 4 months ago Viewed 228 times May 29, 2023 · 0 I'm trying to access the value of a array fileList that I pass as a prop to a component <FileDisplay prop={filesList}/>, but when I try to read a property of the array {JSON. In order to access the userId, you now need to use the useParams hook. Learn why the error 'Cannot read properties of undefined (reading ‘map’)' occurs in React and how to fix it. mnjdf yyvxvg dgkh goldpyy jxgmjd fkygr dqdkm sibggyc ynztne yxstsyvr xmto dnpzwl cusmi fjjw ebjwkh