Firebase Error: Firebase App with name '[DEFAULT]' already exists (Duplicate App)

Introduction

If you are a programmer working with Firebase, you may have come across the error message "Firebase Error: Firebase App with name '[DEFAULT]' already exists (Duplicate App)". This error occurs when you try to initialize a Firebase app with the name '[DEFAULT]', but there is already an app with this name initialized in your project. In this article, we will discuss the causes of this error and how to fix it.

Causes of the Error

The Firebase Error: Firebase App with name '[DEFAULT]' already exists (Duplicate App) occurs when:

• You try to initialize a Firebase app with the name '[DEFAULT]', but there is already an app with this name initialized in your project.
• You try to initialize multiple Firebase apps with the same name.

How to Fix the Firebase Error

There are a few ways to fix the Firebase Error: Firebase App with name '[DEFAULT]' already exists (Duplicate App). Here are some solutions:

Solution 1: Ensure that you have only one Firebase app with the name '[DEFAULT]'

In order to ensure that you only have one Firebase app with the name '[DEFAULT]', you should check your code and make sure that you are only initializing one Firebase app with this name. If you find that you have multiple Firebase apps with the name '[DEFAULT]', you should rename them to avoid this error. To do this, you should update the name of the Firebase app in the Firebase console and in the code where you initialize the app.

Solution 2: Reuse the existing Firebase app with the name '[DEFAULT]'

If you have already initialized a Firebase app with the name '[DEFAULT]', you can reuse it instead of initializing a new app with the same name. To do this, you can update your code to refer to the existing app rather than creating a new one. This can help you avoid the Firebase Error: Firebase App with name '[DEFAULT]' already exists (Duplicate App).

Solution 3: Initialize the Firebase app with a different name

If you want to initialize multiple Firebase apps in your project, you should use a different name for each app. This will help you avoid the Firebase Error: Firebase App with name '[DEFAULT]' already exists (Duplicate App). To initialize a Firebase app with a different name, you can update the name of the app in the Firebase console and in the code where you initialize the app.

Conclusion

In conclusion, the Firebase Error: Firebase App with name '[DEFAULT]' already exists (Duplicate App) is a common error that occurs when you try to initialize multiple Firebase apps with the same name. To fix this error, you should ensure that you have only one Firebase app with the name '[DEFAULT]', reuse the existing app with this name, or initialize the app with a different name. By following these solutions, you can avoid this error and continue working with Firebase in your project.