I have created a project named "HelloWorldLightningWebComponent", and created a LWC component to it. While deploying the source to org from VSC, getting the error message. I have checked the version in both lwc's meta file and also sfdx-project.json file, its the same (45.0). Any ideas what is missing?

Also verified the source org for component with same name and didnt find any.

<?xml version="1.0" encoding="UTF-8"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata" fqn="helloWorld">
  "packageDirectories": [
      "path": "force-app",
      "default": true
  "namespace": "",
  "sfdcLoginUrl": "https://login.salesforce.com",
  "sourceApiVersion": "45.0"

11 Answers 11


JSON suffix error. It happened to me and I changed the repository name from "lwc" to "LWC" and solved the problem.

  • Additionally "lwc" should not be used as a name for any parent folder in the project path.
    – burntsugar
    Commented Jan 10, 2022 at 0:33
  • In my case, I was trying to be organized and created ~/dev/lwc and moved all of my existing apps into this dir. This is what caused the issue. As soon as I renamed ~/dev/lwc to ~/dev/SOMETHINGELSE, deploys started working again.
    – DustinB
    Commented Feb 8, 2022 at 16:59
  • 1
    I filed an issue about this github.com/forcedotcom/cli/issues/1395
    – DustinB
    Commented Feb 8, 2022 at 17:37

This error happens if you already have a Lightning Web Component in your instance with the same name that you are trying to create a new one.

Hence make sure to use a New org if you are doing a Trailhead or refresh all the components from your org using the Org Browser to make sure you are editing instead of adding a new one.


I saved my project by mistake inside another projects's force-app\mian\default\lwc. Changed the location and that solved the problem.


Not sure if that was the cause but I accidently created the new project under main folder of another project and when I was trying to deploy I got this error . Later I deleted the new project folder and made separate folder and I was able to deploy the component .


I had the same issue. Turns out it was a typo in my test folder name, I had an extra underscore in the folder name.


for my situation, it seems cause by a experimental feature "salesforcedx-vscode-core.experimental.deployRetrieve". go to file > preference and disable deployRetrieve


I had a similar error. In my case I had a folder named lwc in the navigation path to the actual location of the of the project. And I had another component at the same level as the correct one. Once I removed the entire folder of the extra component and updated the lwc folder, I was able to get past this error.


Just experienced the same issue. It's because I tried to delete files in my current project and authorize/deply to org from there. Resolved when I created a new project for the new files.


Make sure that none of the folders in the Project path has name "lwc". I faced this issue as well, and fixed it by changing the name of a subfolder named "lwc" in the project-path to something else.


In my case i had saved a .json file in the root folder for my LWC. Removing it solved the problem. enter image description here


Not sure if this is helpful.

Was fortunate enough to catch a codebase with very similar metadata failing full package version creation complaining about "unable to build lightningcomponent..."

ended up being an adjustment to my .forceignore to include :

# LWC Jest

This is what was needed as an addition. I already had the below:

# LWC configuration files

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