The Requested URL Was Not Found on this Server Error in Angular

If you are a developer, you might be constantly faced with errors that can make your development work challenging, and one of the most common errors in Angular is the ‘The Requested URL Was Not Found on this Server Error.’ Whenever this error appears, it indicates that the Angular is not able to locate the requested URL. If you are also dealing with this error, don’t worry; this article is all you need to understand and fix this error. Let’s get started.

Understanding the Requested URL Not Found Error in Angular

Most of the time, this error is caused due to one of the following reasons:

  • The URL entered is incorrect and is not available on the server

  • The server is down and cannot process requests

  • The server is busy and cannot accept requests at the current time

  • The port being used to access the server is incorrect

You can also encounter this error in Angular if you are using AngularJS. The error can be caused by the absence of the ‘#’ character in the URL. So, for instance, if you are requesting http://localhost:4200/dashboard, try using http://localhost:4200/#/dashboard to fix the error.

Fixing the Requested URL Not Found Error in Angular

Here are some of the ways you can try to fix the Requested URL Not Found Error in Angular:

Wrap your Routes in a Default Route

If you are using Angular Router, as you should, ensure that you have set up a default route so that the Angular app loads correctly. You can do this by wrapping your routes in a default route as shown below:

<RouterModule.forRoot([

  { path: '', component: YourAppComponent },

  { path: 'home', component: HomeComponent },

  { path: 'about', component: AboutComponent },

  { path: '**', redirectTo: '' }

])>;

The ** path will redirect to the default path if Angular cannot find the requested URL on the server.

Use Hash in your URLs

As mentioned earlier, when using AngularJS, it is essential to include the ‘#’ character in your URLs. This is because the server looks for this character to identify the location of the client-side hash content. Similarly, you can use the same approach with Angular by enabling hash routing so that your URLs contain the # character.

RouterModule.forRoot(routes, { useHash: true });

Use a Different Port

If your server is sporadically down or very busy, try using a different port that is less congested. This solution is not optimal, but it can provide some relief while you troubleshoot the root cause of the issue.

FAQs About the Requested URL Not Found Error in Angular

Q. Why am I getting the Requested URL Was Not Found Error in Angular?

A. This error can be caused due to various reasons, such as incorrect URL, server downtime, or an incorrect port being used to access the server.

Q. How can I fix the Requested URL Was Not Found Error in Angular?

A. There are several ways to fix this error, such as wrapping your routes in a default route, using Hash in your URLs, or using a different port.

Q. Can I prevent the Requested URL Was Not Found Error in Angular?

A. Yes, you can prevent this error by ensuring that your URLs are correct and by creating a robust error-handling mechanism to detect and handle it proactively.

Q. Is it possible to automate the handling of this error in Angular?

A. Yes, you can automate the handling of this error by creating a custom error page that can be displayed when this error occurs. You can also add a redirect to the default route so that the user is redirected immediately when the error is detected.

Conclusion

The Requested URL Was Not Found on this Server Error is not unique to Angular, but this article has provided some solutions that work effectively in Angular. You can use one or more of these solutions to fix this error and ensure that your Angular app runs smoothly. Remember to test your app frequently to detect this error early and avoid long downtimes.

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