Built folder with files does not work

Hello all,
I’m a React developer and I want to use mobiscroll. I tried with the start of projects and demo projects. When I use build server - all is ok. When I use developer mode - all is ok. When I use build and try to open index.html in chrome, firefox or in safari I always have white page.
Btw, when I use
"
$yarn build
yarn run v1.13.0
warning …/…/package.json: No license field
"

however when I use “npm run-script build” I not get an “warning …/…/package.json: No license field”
When I build for production I receive a folder Build and in theory is ready to be use straight away (for example in GitHub). This is correct? Yes! But when I upload that whole folder to GitHub I receive an blank page:

Live demo:

https://mariuszsygnowski.github.io/test/

Anyone can help me?

If you open the dev console, you’ll probably see the errors that the css and js resources are not found. This is because it is served from a “subfolder” (/test), while the browser looks for the resources under the server root.
This could be probably solved by setting the base url in your index.html head section, something like:

<base href="/test/" />

However this is not related to mobiscroll being present in the project.

Hi, no, it didi’t helped at all.
I helped a lot when I added /test on beginning of 6 links ie:

<link rel="shortcut icon" href="/test/favicon.ico" />
<link rel="manifest" href="/test/manifest.json" />

But now is missing 2 files:

icons_mobiscroll.965a7a1a.woff
icons_mobiscroll.c405c13e.ttf

here is an error:

mobiscroll.react.min.js:399 GET https://mariuszsygnowski.github.io/static/media/icons_mobiscroll.965a7a1a.woff net::ERR_ABORTED 404
show @ mobiscroll.react.min.js:399
Pt.s._init @ mobiscroll.react.min.js:2845
Z.p.init @ mobiscroll.react.min.js:948
Pt @ mobiscroll.react.min.js:2850
value @ mobiscroll.react.min.js:3055
Li @ react-dom.production.min.js:5351
Ai @ react-dom.production.min.js:5099
Di @ react-dom.production.min.js:5066
Ei @ react-dom.production.min.js:5001
ti @ react-dom.production.min.js:4927
Hi @ react-dom.production.min.js:5538
Ri @ react-dom.production.min.js:5546
Bi.render @ react-dom.production.min.js:5737
(anonymous) @ react-dom.production.min.js:5822
Ii @ react-dom.production.min.js:5468
Ki @ react-dom.production.min.js:5821
render @ react-dom.production.min.js:5850
22 @ index.js:7
f @ (index):50
9 @ serviceWorker.js:135
f @ (index):50
a @ (index):40
e @ (index):32
(anonymous) @ main.7e74e460.chunk.js:1
(index):1 GET https://mariuszsygnowski.github.io/static/media/icons_mobiscroll.c405c13e.ttf net::ERR_ABORTED 404

I can confirm is working fine when I upload to the server in rot directory:
https://marinelli19.000webhostapp.com/

Ok, I checked this again.
Instead of adding <base href="/test/" />, you need to set the "homepage" property in your package.json file:

  ...
  "homepage": "https://mariuszsygnowski.github.io/test/"
  ...

Like said before, this is not something related to mobiscroll, this is the build process of the create-react-app scripts.

More info on this here;