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Mastering Development

Error 401 while reloading Jwt secured spring Boot React app (and configuration problems)

I’m learning spring boot and react. I have successfully learnt how to use the frontend maven plugin to combine the two. Also JWT kind of works (at least an api call returns what I want while the token is alive and returns error when i set quick expiration time). But react routes work weirdly. I […]

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Mastering Development

React/Node app in Heroku, serving index.html/index.js with server running

I’m pretty sure that this issue is localized to my start scripts. When looking online people will post differing start scripts. Some have “start”: “node index.js” -> (this won’t start my server), gives an H10 error in heroku logs Others have “start”: “nodemon server.js” -> (this runs the server, serves the index.html, but it won’t […]

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Mastering Development

My react app on heroku opens home page but will not open other pages

My react app runs fine locally, and deploys to heroku. However, from the home page, any link to another page shows a blank page with ‘not found’ on it. There are no other error messages. Here is my server-side package.json file: { “name”: “portfolio-generator”, “version”: “1.0.0”, “description”: “”, “main”: “server.js”, “engines”: { “node”: “12.16.x” }, […]

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Mastering Development

npm start does nothing on windows

When I try to run npm start just after creating application with npx create-react-app, it does anything and exits with code 0. When I try to execute npm start command, I get the following message: C:\projects\novo-curriculo\ui>npm start > novo-curriculo-ui@0.1.0 start C:\projects\novo-curriculo\ui > react-scripts start When I enable –verbose options, I receive the following logs, which […]

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Mastering Development

Deploying personal github pages (React App) just shows Readme

I’m trying to deploy a user-github page at username.github.io. So not a project page. However, after following steps online, I’m met with just the readme.md. The existing questions about problems releated to this are for github pages (username.github.io/someproject), whilst this is just for username.github.io. Procedure npm install gh-pages –save-dev in package.json: “homepage”: “https://myusername.github.io”, “name”: “homepage”, […]

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Mastering Development

Heroku Error Code H10 – cannot get app to load, no solution seems to work

I’m having what seems to be a common issue with heroku deployment, but have searched for hours over multiple days for a solution on stackoverflow and other online resources and with mentors and nothing has worked. This is the error code I’m getting: 2020-05-14T01:20:34.309134+00:00 heroku[web.1]: State changed from starting to crashed 2020-05-14T01:26:51.177016+00:00 heroku[router]: at=error code=H10 […]

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Mastering Development

I can’t seem to be able to use hooks in react

I’m starting a new react app. So far, nothing weird has been added. This is how my package.json looks like: { “name”: “client”, “version”: “0.1.0”, “private”: true, “dependencies”: { “@testing-library/jest-dom”: “^4.2.4”, “@testing-library/react”: “^9.3.2”, “@testing-library/user-event”: “^7.1.2”, “axios”: “^0.19.2”, “bootstrap”: “^4.4.1”, “fibers”: “^5.0.0”, “jquery”: “^3.5.0”, “moment”: “^2.24.0”, “node-sass”: “^4.14.0”, “popper”: “^1.0.1”, “react”: “^16.13.1”, “react-bootstrap”: “^1.0.1”, “react-dom”: “^16.13.1”, […]

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Mastering Development

Legacy context API has been detected within a strict-mode tree

{ “name”: “my-app”, “version”: “0.1.0”, “private”: true, “dependencies”: { “@testing-library/jest-dom”: “^4.2.4”, “@testing-library/react”: “^9.3.2”, “@testing-library/user-event”: “^7.1.2”, “bootstrap”: “^4.4.1”, “bootstrap-social”: “5.1.1”, “cross-fetch”: “2.1.0”, “font-awesome”: “4.7.0”, “prop-types”: “15.6.0”, “react”: “^16.13.1”, “react-animation-components”: “3.0.0”, “react-dom”: “^16.13.1”, “react-popper”: “0.9.2”, “react-redux”: “5.0.7”, “react-redux-form”: “1.16.8”, “react-router-dom”: “^4.3.1”, “react-scripts”: “3.4.1”, “react-transition-group”: “2.3.0”, “reactstrap”: “5.0.0”, “redux”: “3.7.2”, “redux-logger”: “3.0.6”, “redux-thunk”: “^2.2.0” }, “scripts”: { “start”: […]

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Mastering Development

React app HashRouter not working on localhost as well as Github User page

I’m creating a blog in React to be deployed on GitHub Pages. Problem Created my React app and added BrowserRouter for navigation, everything was working fine on localhost and the app successfully deployed on the GitHub Pages. Even though Home page was accessible on GitHub Pages, if I click on any link there was 404 […]

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Mastering Development

Why is my React App not displaying when I serve an index.html file with Express to Heroku?

I am trying to deploy my MERN app to Heroku. When I push to Heroku, I am able to type my endpoints into the URL to ‘get’ data. However, the main page of the app is not displaying my react app components. I am using Express to send my index.html file from /frontend/build (which is […]