### Author:  [@DANIEL\_S](https://forum.babylonjs.com/u/DANIEL_S)
#### Post date: [September 1, 2022, 7:41pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/1 "2022-09-01T19:41:59Z")
I cannot get my setup to work as before nothing has changed, I have just upgraded the babylon.js dependencies from a 5.21.0. to 5.22.0 and then I have all these errors about missing loaders.
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### Author:  [@neu5](https://forum.babylonjs.com/u/neu5)
#### Post date: [September 1, 2022, 8:14pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/2 "2022-09-01T20:14:02Z")
Hi @DANIEL_S,
Looks like your Webpack is not understanding the optional chaining feature of JavaScript.
What version of Webpack do you have in your project?
If it is possible upgrading the Webpack version should help.
You can find more information here
>
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### Author:  [@DANIEL\_S](https://forum.babylonjs.com/u/DANIEL_S)
#### Post date: [September 1, 2022, 8:30pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/3 "2022-09-01T20:30:14Z")
> [@neu5](#):
>
> [javascript - How to make webpack accept optional chaining without babel - Stack Overflow](https://stackoverflow.com/questions/59972341/how-to-make-webpack-accept-optional-chaining-without-babel)
Thanks @neu5, I don’t directly configure my webpack except for a few overrides as I am working in a monorepo structure using [https://nx.dev/](https://nx.dev/) build tools. However I do use optional chaining abit in other parts of my application and it works just fine.
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### Author:  [@neu5](https://forum.babylonjs.com/u/neu5)
#### Post date: [September 1, 2022, 8:41pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/4 "2022-09-01T20:41:30Z")
I am not familiar with the Nx.
Can you check what version of Webpack is used in the part that the BabylonJS is being involved?
I’ve found something like that
> **[Webpack 5 Migration](https://nx.dev/recipe/webpack-5#webpack-5-migration)**
>
> Next generation build system with first class monorepo support and powerful integrations.
at the Nx page. Maybe that will help
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### Author:  [@sebavan](https://forum.babylonjs.com/u/sebavan)
#### Post date: [September 1, 2022, 9:19pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/5 "2022-09-01T21:19:42Z")
cc @RaananW
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### Author:  [@sebavan](https://forum.babylonjs.com/u/sebavan)
#### Post date: [September 1, 2022, 9:19pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/6 "2022-09-01T21:19:45Z")
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### Author:  [@RaananW](https://forum.babylonjs.com/u/RaananW)
#### Post date: [September 1, 2022, 9:41pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/7 "2022-09-01T21:41:46Z")
What webpack version are you using?
Webpack 4.0 doesn’t like modern syntax and requires transpiling your code.
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### Author:  [@DANIEL\_S](https://forum.babylonjs.com/u/DANIEL_S)
#### Post date: [September 2, 2022, 6:30am UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/8 "2022-09-02T06:30:51Z")
Still using Webpack 4.0, I’ll Update my Nx tools and see if that doesn’t break the builds
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### Author:  [@RaananW](https://forum.babylonjs.com/u/RaananW)
#### Post date: [September 2, 2022, 7:39pm UTC](https://forum.babylonjs.com/t/webpack-will-not-compile-myn-application-after-upgrade-from-babylon-5-21-0-to-the-5-22-0/33597/9 "2022-09-02T19:39:11Z")