Hey Friend, This article is about how to resolve the issue of ` Unhandled Exception: PlatformException(channel-error, Unable to establish connection on channel., null, null)` . In this article i will describe in breifly how to resolve this issue while running flutter. When did I got this Error: This is my issue which i was running linux desktop app. In my case firebase_core dependency was not working 1st Method : What worked for me I was building my project for linux Desktop App ,Now instread I run my app for both Android and web My app and it worked fine for my case. My Advise , Run your app on other Platforms too. 2nd Method : As the Error is due to dependency try to clean your project and allow to rebuild your app from base of your project. Here is my issue which I have rose in github: https://github.com/firebase/flutterfire/discussions/12077 commands you can use are Conclusion: While building your First Flutter project.These are tiny errors to get know...