Скачать или смотреть Fixing the 401 Unauthorized Error in React and Laravel Sanctum

Struggling with a `401 Unauthorized` error in your React application using Laravel Sanctum? Discover how to troubleshoot and fix this issue with our comprehensive guide.
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This video is based on the question https://stackoverflow.com/q/67988839/ asked by the user 'Fahmi' ( https://stackoverflow.com/u/14046747/ ) and on the answer https://stackoverflow.com/a/68036616/ provided by the user 'Fahmi' ( https://stackoverflow.com/u/14046747/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Fixing the 401 Unauthorized Error in React and Laravel Sanctum: A Step-by-Step Guide

If you’re developing a web application with React and Laravel Sanctum, you might encounter a frustrating 401 Unauthorized error. This issue can halt your development progress, especially if everything seems fine when you test your API with Postman. Let's explore what the 401 Unauthorized error means and how to effectively resolve it.

Understanding the 401 Unauthorized Error

The 401 Unauthorized error occurs when a request is made to an endpoint that requires authentication, but either no authentication token is provided or the provided token is invalid or expired. This can happen for various reasons, especially when integrating a frontend framework like React with a backend framework like Laravel.

Possible Causes

Incorrect Token: The token might not be correctly configured, or it's not being sent in the request headers.

CORS Issues: The frontend and backend are on different domains, leading to unauthorized access.

Stateful Domains: Misconfigured stateful domains in your Laravel Sanctum settings.

Troubleshooting the Issue

You mentioned that everything works well in Postman but encounters issues in your React application. Let’s look at how you can troubleshoot and resolve this.

Step 1: Review Laravel Sanctum Configuration

Make sure your .env file has the proper configuration for stateful domains. You mentioned the following setup:

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

Ensure that these entries are accurate and match the domain where your React application is running (e.g., localhost:3000).

Stateful Domain Configuration:

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

Confirm that all necessary domains are included in the SANCTUM_STATEFUL_DOMAINS string.

Step 2: axios Configuration

In your React frontend, ensure you are correctly handling requests with Axios. Here’s the relevant piece of code you shared:

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

Step 3: Method Verification

The root of your issue appears to stem from using the POST method for a logout request, which should typically be a DELETE request. You mentioned finding this bug. Here’s how to fix it:

Change the Request Method:
Ensure you modify your logout function to use the DELETE method instead of POST:

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

Final Code Example

Below is how your final logout function should look:

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

Conclusion

By ensuring that your sanctuary settings are accurate, correctly configuring your Axios requests, and using the appropriate HTTP method, you can effectively resolve the 401 Unauthorized error in your React application interfacing with Laravel Sanctum.

If you encounter further issues, consider checking your API routes and ensuring they are correctly defined and accessible. Happy coding!