react with spring boot white label error page in tomcat - reactjs

How to redirect to correct react page with spring boot as back end in tomcat instead of showing white label error page?
I think my routing is not configured properly, can you please suggest the configuration steps.
I'm also stuck with Firefox browser in image upload (image upload works fine in chrome and opera)

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Safari Issue with Single Page Application React with AWS (Cloudfront/S3)

I am hosting a single page application based in React in S3 and served up in a CloudFront distribution (AWS). Everything works fine in production and The CloudFront error handling is setup correctly like shown below:
I did this for 404 and 403 responses. When I attempt open a link to a non root path (e.g. /settings), it works fine in Chrome and Firefox. However, in Safari I get redirected to the root path. I don't know how to resolve this Safari specific issue, any help is appreciated, thank you.
Similar problem without an answer here Safari Issue with Single Page Application AngularJS in HTML5mode with AWS (Cloudfront/S3)

If I refresh the browser my react app are being page not supported error message

I'm new in react app development, I just build my practice app and deployed it through Netlify. I can visit my app and everything is fine till I refresh my window. Refreshing the window comes with an error page not found. what should I do to solve this problem?
You may need to look at providing a _redirects file in your root directory. See https://docs.netlify.com/routing/redirects/
For example,
/* /index.html 200
As cra is single page application, you need server setting to redirect everytime to index.html,
You might want to check this link
https://www.netlify.com/blog/2020/04/07/creating-better-more-predictable-redirect-rules-for-spas/

React app showing blank page in GitHub pages

After uploading my react app on gitHub pages its showing a blank page, and there is no error displaying in console. When I inspected the pages it says:
You need to enable javascript to run this page
but when I checked by browser settings it shows my javascript is enabled.
Here is my console
Here are the elements
Here is the Package.json
Also when I tested with a basic react app(no routes only single page) it was displaying properly
If gitHub is not publishing, is there any other alternative to publish my work?
Thanks
It looks good from my side. You should try with another browser to see if the problem persists.

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.

Ionic img basic authentication

How can I set basic authentication on IMG tag for Ionic?
I have tried using src="http://username:password#server/Path" as suggested on link which works fine with ionic serve in browser, but when uploaded to mobile it doesn't work. I am fetching other resources with authentication header with http request which works fine also.
Any help would be appreciated

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