# Creating SPA with webpack and babel issues
**URL:** https://forum.kirupa.com/t/creating-spa-with-webpack-and-babel-issues/636983
**Category:** programming
**Created:** [August 3, 2017, 5:20am UTC](https://forum.kirupa.com/t/creating-spa-with-webpack-and-babel-issues/636983 "2017-08-03T05:20:00Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@jong649](https://forum.kirupa.com/u/jong649)
#### Post date: [August 3, 2017, 5:20am UTC](https://forum.kirupa.com/t/creating-spa-with-webpack-and-babel-issues/636983/1 "2017-08-03T05:20:00Z")
I’m trying to combine the SPA lesson from the Learning React Book with the last chapter about setting up your development environment, but I keep running into issues rendering any of my components. I thought it might have to do with setting up react-router in package.json, but I honestly don’t know what’s wrong.
I don’t get any error messages when I run the webpack command, but I still don’t have any components visible.
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### Author:  [@kirupa](https://forum.kirupa.com/u/kirupa)
#### Post date: [August 4, 2017, 2:25am UTC](https://forum.kirupa.com/t/creating-spa-with-webpack-and-babel-issues/636983/2 "2017-08-04T02:25:37Z")
Do you see any errors in the console when you preview your HTML page?
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### Author:  [@jong649](https://forum.kirupa.com/u/jong649)
#### Post date: [August 4, 2017, 1:10pm UTC](https://forum.kirupa.com/t/creating-spa-with-webpack-and-babel-issues/636983/3 "2017-08-04T13:10:10Z")
Yes, I get this error:
Uncaught TypeError: Cannot read property ‘Router’ of undefined
at Object. (myCode.js:10858)
at **webpack\_require** (myCode.js:20)
at module.exports (myCode.js:63)
at myCode.js:66
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### Author:  [@kirupa](https://forum.kirupa.com/u/kirupa)
#### Post date: [August 5, 2017, 12:47am UTC](https://forum.kirupa.com/t/creating-spa-with-webpack-and-babel-issues/636983/4 "2017-08-05T00:47:06Z")
It does seem like a react router issue. Are you able to build the simple hello world app without any issue? 🙂
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### Author:  [@jong649](https://forum.kirupa.com/u/jong649)
#### Post date: [August 5, 2017, 3:12am UTC](https://forum.kirupa.com/t/creating-spa-with-webpack-and-babel-issues/636983/5 "2017-08-05T03:12:15Z")
Yeah, I was able to complete everything in the book with no issues, but I’m trying to run the SPA project with the development environment from the last chapter.