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Dynamics 365 Community / Forums / Supply chain | Supply Chain Management, Commerce / D365 eCommerce/VisualS...
Supply chain | Supply Chain Management, Commerce
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D365 eCommerce/VisualStudio Code : (node:25180) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'substr' of undefined

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Posted on by Kurt Hatlevik 2,067

When setting up a eCommerce development environment as described here https://docs.microsoft.com/en-us/dynamics365/commerce/e-commerce-extensibility/setup-dev-environment I get the following error when running "yarn start".   Any idea on how to fix this ?

pastedimage1643986963663v1.png

I have the same question (0)
  • Sam Jarawan Profile Picture
    Sam Jarawan Microsoft Employee on at

    Hi Kurt,

    Can you confirm if you made any additional code changes or were you just following the direct steps in the document?

    Can you also confirm what version of Node you have installed, we don't curretly support the latest version only 12.x and that could be the root cause.

    If you open a command prompt and type in "node --version" it will print out the version name as shown below.

    pastedimage1643995747504v1.png

    If that's it, can you uninstall Node and reinstall 12.x.

    To get version 12.x click on the "Other downloads" link on the Node.js website:

    pastedimage1643995838980v2.png

    Then "Previous Releases:

    pastedimage1643995895343v3.png

    Then you can find the latest version of 12.x:

    pastedimage1643995976130v4.png

    I hope that helps,

    Sam

  • Verified answer
    Sam Jarawan Profile Picture
    Sam Jarawan Microsoft Employee on at

    Hi Kurt,

    Thanks for confirming you did have Node 12.x installed.

    I was able to repro the issue, there is a bug in the latest released SDK that just went live and we should have a fix published today.  In the mean-time here is the work around.

    1. Add "webpack-sources": "3.2.2" to "resolutions" section in package.json

    2. delete yarn.lock

    3. run yarn again

    Now run "yarn start" and all should be good.

    thanks,

    Sam

  • Suggested answer
    Kurt Hatlevik Profile Picture
    Kurt Hatlevik 2,067 on at

    YES!   This works :-)

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