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Last Updated: June 17, 2026
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NodeJS : Error: The default Firebase app already exists. Really?
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![NodeJS : Firebase App named '[DEFAULT]' already exists & google firebase reference does not work on](https://ytimg.googleusercontent.com/vi/w4UXqhoauDM/mqdefault.jpg)
![NodeJS : Error: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()](https://ytimg.googleusercontent.com/vi/hVOVQCf7Q5o/mqdefault.jpg)
NodeJS : Error: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()
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About to Nodejs Error The Default Firebase App Already Exists Really
for any query contact: Whatsapp: +9233157005845 LinkedIn: How to fix Caused by: java.lang.IllegalStateException:
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![NodeJS : Firebase App named '[DEFAULT]' already exists & google firebase reference does not work on](https://i0.wp.com/ytimg.googleusercontent.com/vi/w4UXqhoauDM/mqdefault.jpg?resize=320,180)
![NodeJS : Error: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()](https://i0.wp.com/ytimg.googleusercontent.com/vi/hVOVQCf7Q5o/mqdefault.jpg?resize=320,180)
![Unhandled Exception: [core/duplicate-app] A Firebase App named "[DEFAULT]" already exists](https://i0.wp.com/ytimg.googleusercontent.com/vi/9YQ_5rxqEHc/mqdefault.jpg?resize=320,180)
![Resolving the No Firebase App [DEFAULT] has been created Error in React Native](https://i0.wp.com/ytimg.googleusercontent.com/vi/yejTA7B_XTo/mqdefault.jpg?resize=320,180)
![Android : FirebaseApp name [DEFAULT] already exists](https://i0.wp.com/ytimg.googleusercontent.com/vi/-4pbx4rzGgc/mqdefault.jpg?resize=320,180)
![No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()](https://i0.wp.com/ytimg.googleusercontent.com/vi/1sy9CCF84bM/mqdefault.jpg?resize=320,180)
![[core/duplicate-app] A Firebase App named "[DEFAULT]" already exists| Solved Errors| Error Flutter](https://i0.wp.com/ytimg.googleusercontent.com/vi/2QnPt8EwmTo/mqdefault.jpg?resize=320,180)
![Android : No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp() the same erro](https://i0.wp.com/ytimg.googleusercontent.com/vi/UfuZXdyQHzo/mqdefault.jpg?resize=320,180)
![[SOLVED] Default FirebaseApp is not Initialized in This Process](https://i0.wp.com/ytimg.googleusercontent.com/vi/0qFUVtMirbo/mqdefault.jpg?resize=320,180)
![Unhandled Exception: [core/duplicate-app] A Firebase App named "[DEFAULT]" already exists](https://i0.wp.com/ytimg.googleusercontent.com/vi/uTtjqq7jk3o/mqdefault.jpg?resize=320,180)
![[core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()](https://i0.wp.com/ytimg.googleusercontent.com/vi/ggf1b6IGYHU/mqdefault.jpg?resize=320,180)
![No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()](https://i0.wp.com/ytimg.googleusercontent.com/vi/GPWu395vka0/mqdefault.jpg?resize=320,180)
![No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()](https://i0.wp.com/ytimg.googleusercontent.com/vi/GpUSZZJ4a4E/mqdefault.jpg?resize=320,180)
