Troubleshooting the npm run server Error in Your Vue JS Project

Learn how to fix the `TypeError: Cannot read property 'tap' of undefined` when running `npm run serve` in your Vue JS project by downgrading the PWA plugin version.
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This video is based on the question https://stackoverflow.com/q/71392914/ asked by the user 'Karthick M' ( https://stackoverflow.com/u/17497876/ ) and on the answer https://stackoverflow.com/a/71405942/ provided by the user 'RizwanTariq' ( https://stackoverflow.com/u/12928018/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting the npm run server Error in Your Vue JS Project

When working with a Vue JS project, getting stuck with errors can be frustrating, especially when you've just added new features such as Progressive Web App (PWA) support. One common issue that developers encounter is an error message during the server launch process, which can prevent you from moving forward with your project. In this guide, we will explore a specific error that appears when running npm run serve and how to resolve it effectively.

The Problem: Server Error on Running Vue JS

After adding PWA capabilities using the command:

[[See Video to Reveal this Text or Code Snippet]]

you may face the following error message when you attempt to start your development server using:

[[See Video to Reveal this Text or Code Snippet]]

Error Message Example

[[See Video to Reveal this Text or Code Snippet]]

This error is indicative of compatibility issues with the currently installed version of the PWA plugin in your Vue environment. Fortunately, there is a straightforward solution!

The Solution: Downgrade the PWA Plugin

It has been identified that the issue stems from the @ vue/cli-plugin-pwa version 5.0.0. To correct this, downgrading to version 4.5.15 can resolve the error.

Step-by-Step Instructions

Here’s a simple guide on how to downgrade the PWA plugin:

Uninstall the Current PWA Plugin:
Open your terminal and run the following command to remove the current plugin version:

[[See Video to Reveal this Text or Code Snippet]]

Install the Specific Version:
Next, install the 4.5.15 version of the plugin by running:

[[See Video to Reveal this Text or Code Snippet]]

This command will install the latest release of version 4, which is known to work without the aforementioned error.

Conclusion

By following these steps and downgrading to the stable version 4.5.15 of the @ vue/cli-plugin-pwa, you can successfully bypass the error and get your Vue JS project back on track. Always remember to carefully check compatibility after adding new features or plugins to your existing applications, as this can often prevent similar issues in the future.

With these adjustments, you’re now ready to continue developing your Vue application with the added benefits of PWA support. Happy coding!