React Router / Wordpress htaccess Issue - reactjs

I'm building a React plugin in Wordpress (for my own purposes).
I've used 'create-react-app', then 'yarn build' and then upload the production 'build' folder into Wordpress to a custom directory '/apps/my-custom-app/frontend/build'.
I've used this tutorial to create a Wordpress plugin that gets all the assets from the 'build' folder and renders the React App in the target div on a Wordpress page.
All of this works as expected, the React App renders on my Wordpress page "https://mywebsite.com/wp-page-slug/" and the React routing/navigation works fine ... but only within the React App.
The issue is that if I'm on a React page (except for the root slug) and refresh the browser, I end up getting a 404 error.
After researching on StackOverflow, I've found that this is resolved using the .htaccess file.
I've used this function from the solution in this article ...
add_action( 'init', 'my_custom_app_frontent_rewrite_rule' );
function my_custom_app_frontent_rewrite_rule() {
add_rewrite_rule('^react-app-root-url/(.+)?', 'index.php?pagename=wp-page-slug', 'top');
}
... to add a rewrite rule, but there's something wrong. When I enable it, the entire frontend of the website goes blank (white screen).
Is the 'add_rewrite_rule' not correct? I don't know what's wrong here.
Wordpress Permalinks are currently set to 'Post Name'.
The Wordpress page slug is '/wp-page-slug'.
The React App Router Base URL is '/react-app-root-url'.
And the homepage property in the React package.json file is '/apps/my-custom-app/frontend/build'.
Any assistance would be appreciated, thank you.

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Nginx + React fail to load resources

Hey. I have a problem with react. I use '/' path for client (some static html content), and '/panel' for example for another server using 1 domain.
But i have errors which don't load my react page.
So on home location (http://localhost/) all good.
http://localhost/panel - only 'react app' in title.
That's because your React app tries to load the CSS and JS from the root path. Configure the homePage field in package json to be
"homePage": "/panel"

Routes don't work in production of react website

I have a question.
I created a react website and everything works perfectly on local development.
So if I go to localhost:8080/about I get on the about page.
When I build the website only an index.html gets made.
When I navigate the website from the index page, it all works, also the urls changes to /about when I go to the about page through the menu.
But when I go to www.website.com/about by typing in the address I get an error page.
Who can help me with this?
JayD
You need to setup your react router accordingly. Usually you need to add one extra file in your build files. Below is the tutorial on how to setup react router using fierbase and netlify. If you deploy somewhere else, please let me know. I can help you with that.
Firebase
Netlify

Nextjs 404 error on reload/ refresh action

I'm using Nextjs for a front-end application and dotnet core 3.1 for the Web API. There are some pages that are static and other that are dynamic I followed the official documentation to achieve this. On development mode (local machine) everything works fine. Both static and dynamic routes are working properly and fetching data from the dontnet core Web API.
However, when publishing the Nextjs app following this steps:
yarn build
yarn export
An out folder is generated at the root of the project
The content of that folder is uploaded to the server
After, the deployed files are uploaded and when loging to the app, it redirects to the main page (until here is working OK), but as soon as I click on the reload page botton (Chrome) I am gettint the 404 error.
Looking at the console in the developer tools I got this:
I found this Stackoverflow link with same issue but there the answer is to use Express for server routing. In my case I am using dotnet core Web API for server requests. So, not sure how to do that.
Is there a way to fix this from the client side? Might be a configuration is missing?
The only thing I noticed while doing the export was a message saying: No "exportPathMap" found. Not sure if that would the the reason.
I had got similar issue in react when all of my pages after building and exporting had ".html" extensions. I solved it by the following code in next.config.js file.
next.config.js
module.exports = {
exportTrailingSlash: true,
}
Note: Do not work with the above code while in development. Use it just before building the project.
You can find the documentation link here: https://nextjs.org/docs/api-reference/next.config.js/exportPathMap#adding-a-trailing-slash.
UPDATE
The above code was for next.js v9.3.4 which I was using at that time. For newer versions below code should be used according to docs.
next.config.js
module.exports = {
trailingSlash: true,
}
it has been fixed update your nextjs package
npm install next#latest
based on the current version of Next js you have, visit here to see if there's any breaking change before updating what you have
I had a similar issue where after deploying the out folder created by next export all URL's would redirect me to the homepage. Everything was working fine during development and all URL's were accessible with next/link but in order to access pages with a URL I had to add a .html extension at the end of the URL.
Because I needed a quick workaround I added a useEffect block in the _app.tsx file for rerouting so that upon landing on the homepage it would act as if a Link component was clicked redirecting to the entered URL.
useEffect(()=>{
router.push(window.location.href)
},[])

How to deploy a react application on a static server

I have a react application build with create-react-app. Its using octoberCMS as the backend fetching data using Axios calls from the frontend. Till now I was developing keeping the build content of react inside a directory named 'react' in the root directory of octoberCMS installation. Hence the URL I was hitting was http://example.com/react/.
The problem is now I am done with the development phase and look forward to deployment. But I want my front-end to be served at http://example.com and backend to be served at http://example.com/backend (backend served as I want). How can I achieve this? I am fairly new to both frameworks.
I have tried keeping the build content along with the rest of the octoberCMS
First build your react app that will give you vendor.js[third party scripts] and your app.js[your actual app]
put them in to theme directory assets something
Then In Ocotber CMS make page with URL /:url? and paste your index.html content there.
it will be your root div and including js html, change path for js which points to the build js which you put in theme directory.
now what happens when anybody come to site
- we are serving same content as we do in dev build
- index.html with root tag and needed js
Now if use hit any other url like https://www.example.com/test/etc it also will be catch by /:url? (and all other requests) and home page served and our react app will work as we needed.
if any questions please comment.

How to use legacy web site and ReactJS both?

I have a React app which is created by create-react-app command.
And I also have the blog system which is based on Wordpress.
Directory structure is like this.
*/index.html
/service-workder.js
/manifect.json
/index.html
/favicon.ico
/asset-manifest.json
/static/media
/js
/css
/blog <--------------------- Wordpress*
When I access the URL by http:mydomain/blog/,
Firefox show React page instead of Wordpress page.
Firefox even show React page for http:mydomain/blog/nonexisting ,
which I think is supposed to provide 404 not found from web server.
I was struggling to find a way NOT to let React take wildcard paths.
Safari use React only for index.html, which is good.
Chrome, Firefox use React for entire wildcard paths, even for not existing paths.
http://myserver/ ---> should show React app
http://myserver/nonexistence ---> should show 404 from server
Please help me to figure out isolate React app only for exact index.html.
Thanks in advance.
Like I wrote here, the root cause was service worker which seems to be HTML5 feature to make a web site to a web app.
Unregistering service worker was the solution.

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