ERROR in ./src/index.jsx SyntaxError: Unexpected token (13:4)

[wireless-road]

Hello.
Trying to make it working. Even ubunu reinstalling didn't help.
Did everything as explained here:
https://jasonwatmore.com/post/2017/12/07/react-redux-jwt-authentication-tutorial-example
Installed node, npm, npx, nvm:

$ node -v
v12.18.4
$ npm -v
6.14.6
$ nvm -v
0.36.0
$ npx -v
6.14.6

Installing passes well:
$ npm install
But trying to start it gives me following:

 npm start

> [email protected] start /home/al/python/template/ui
> webpack-dev-server --open

ℹ ｢wds｣: Project is running at http://localhost:8080/
ℹ ｢wds｣: webpack output is served from /
ℹ ｢wds｣: Content not from webpack is served from /home/al/python/template/ui
ℹ ｢wds｣: 404s will fallback to /index.html
ℹ ｢wdm｣: wait until bundle finished: /
✖ ｢wdm｣: Hash: 11349b9868bb6765819a
Version: webpack 4.43.0
Time: 1755ms
Built at: 10/03/2020 1:21:37 PM
     Asset       Size  Chunks             Chunk Names
index.html  831 bytes          [emitted]  
   main.js    396 KiB    main  [emitted]  main
Entrypoint main = main.js
[0] multi (webpack)-dev-server/client?http://localhost:8080 ./src 40 bytes {main} [built]
[./node_modules/ansi-html/index.js] 4.24 KiB {main} [built]
[./node_modules/ansi-regex/index.js] 139 bytes {main} [built]
[./node_modules/html-entities/lib/index.js] 449 bytes {main} [built]
[./node_modules/loglevel/lib/loglevel.js] 8.43 KiB {main} [built]
[./node_modules/strip-ansi/index.js] 161 bytes {main} [built]
[./node_modules/webpack-dev-server/client/index.js?http://localhost:8080] (webpack)-dev-server/client?http://localhost:8080 4.29 KiB {main} [built]
[./node_modules/webpack-dev-server/client/overlay.js] (webpack)-dev-server/client/overlay.js 3.51 KiB {main} [built]
[./node_modules/webpack-dev-server/client/socket.js] (webpack)-dev-server/client/socket.js 1.53 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/createSocketUrl.js] (webpack)-dev-server/client/utils/createSocketUrl.js 2.91 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/log.js] (webpack)-dev-server/client/utils/log.js 964 bytes {main} [built]
[./node_modules/webpack-dev-server/client/utils/reloadApp.js] (webpack)-dev-server/client/utils/reloadApp.js 1.59 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/sendMessage.js] (webpack)-dev-server/client/utils/sendMessage.js 402 bytes {main} [built]
[./node_modules/webpack/hot sync ^\.\/log$] (webpack)/hot sync nonrecursive ^\.\/log$ 170 bytes {main} [built]
[./src/index.jsx] 834 bytes {main} [built] [failed] [1 error]
    + 18 hidden modules

ERROR in ./src/index.jsx
Module build failed (from ./node_modules/babel-loader/lib/index.js):
SyntaxError: Unexpected token (13:4)

  11 | 
  12 | render(
> 13 |     <Provider store={store}>
     |     ^
  14 |         <App />
  15 |     </Provider>,
  16 |     document.getElementById('app')

Child html-webpack-plugin for "index.html":
     1 asset
    Entrypoint undefined = index.html
    [./node_modules/html-webpack-plugin/lib/loader.js!./src/index.html] 995 bytes {0} [built]
    [./node_modules/lodash/lodash.js] 528 KiB {0} [built]
    [./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 470 bytes {0} [built]
    [./node_modules/webpack/buildin/module.js] (webpack)/buildin/module.js 500 bytes {0} [built]
ℹ ｢wdm｣: Failed to compile.

[```
What did I do wrong?

[wireless-road]

After some research I created following .babelrc file:

$ cat .babelrc 
{
  "presets": [
    "react",
    "es2015"
  ]
}

After that I get following:

$ npm start

> [email protected] start /home/al/python/template/ui
> webpack-dev-server --open

ℹ ｢wds｣: Project is running at http://localhost:8080/
ℹ ｢wds｣: webpack output is served from /
ℹ ｢wds｣: Content not from webpack is served from /home/al/python/template/ui
ℹ ｢wds｣: 404s will fallback to /index.html
ℹ ｢wdm｣: wait until bundle finished: /
[BABEL] Note: The code generator has deoptimised the styling of "/home/al/python/template/ui/node_modules/react-dom/cjs/react-dom.development.js" as it exceeds the max of "500KB".
✖ ｢wdm｣: Hash: 3db8f8faee867891c547
Version: webpack 4.43.0
Time: 10950ms
Built at: 10/03/2020 1:32:43 PM
     Asset       Size  Chunks             Chunk Names
index.html  831 bytes          [emitted]  
   main.js   1.53 MiB    main  [emitted]  main
Entrypoint main = main.js
[0] multi (webpack)-dev-server/client?http://localhost:8080 ./src 40 bytes {main} [built]
[./node_modules/react-dom/index.js] 1.32 KiB {main} [built]
[./node_modules/react-redux/es/index.js] 789 bytes {main} [built]
[./node_modules/react/index.js] 189 bytes {main} [built]
[./node_modules/strip-ansi/index.js] 161 bytes {main} [built]
[./node_modules/webpack-dev-server/client/index.js?http://localhost:8080] (webpack)-dev-server/client?http://localhost:8080 4.29 KiB {main} [built]
[./node_modules/webpack-dev-server/client/overlay.js] (webpack)-dev-server/client/overlay.js 3.51 KiB {main} [built]
[./node_modules/webpack-dev-server/client/socket.js] (webpack)-dev-server/client/socket.js 1.53 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/createSocketUrl.js] (webpack)-dev-server/client/utils/createSocketUrl.js 2.91 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/log.js] (webpack)-dev-server/client/utils/log.js 964 bytes {main} [built]
[./node_modules/webpack-dev-server/client/utils/reloadApp.js] (webpack)-dev-server/client/utils/reloadApp.js 1.59 KiB {main} [built]
[./node_modules/webpack-dev-server/client/utils/sendMessage.js] (webpack)-dev-server/client/utils/sendMessage.js 402 bytes {main} [built]
[./node_modules/webpack/hot sync ^\.\/log$] (webpack)/hot sync nonrecursive ^\.\/log$ 170 bytes {main} [built]
[./src/App/index.js] 338 bytes {main} [built]
[./src/index.jsx] 600 bytes {main} [built]
    + 137 hidden modules

ERROR in ./src/_components/PrivateRoute.jsx
Module build failed (from ./node_modules/babel-loader/lib/index.js):
SyntaxError: Unexpected token (4:53)

  2 | import { Route, Redirect } from 'react-router-dom';
  3 | 
> 4 | export const PrivateRoute = ({ component: Component, ...rest }) => (
    |                                                      ^
  5 |     <Route {...rest} render={props => (
  6 |         localStorage.getItem('user')
  7 |             ? <Component {...props} />

 @ ./src/_components/index.js 7:20-45
 @ ./src/App/App.jsx
 @ ./src/App/index.js
 @ ./src/index.jsx
Child html-webpack-plugin for "index.html":
     1 asset
    Entrypoint undefined = index.html
    [./node_modules/html-webpack-plugin/lib/loader.js!./src/index.html] 995 bytes {0} [built]
    [./node_modules/lodash/lodash.js] 528 KiB {0} [built]
    [./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 806 bytes {0} [built]
    [./node_modules/webpack/buildin/module.js] (webpack)/buildin/module.js 521 bytes {0} [built]
ℹ ｢wdm｣: Failed to compile.

[wireless-road]

Were able to run it under windows. Facing troubles under Ubuntu.