[Fixed] Firbase flutter, [firebase_auth/channel-error] Unable to establish connection on channel – Flutter

by
Maya Patel
dart firebase flutter

Quick Fix: Ensure to provide valid email address and password while signing in. Also, ensure to use the correct Android version as per the requirement of the Firebase Authentication SDK.

The Problem:

When attempting to use Firebase Auth to authenticate a user in a Flutter application, the following error is thrown:

[firebase_auth/channel-error] Unable to establish connection on channel.

Despite initializing Firebase successfully, the authentication process fails with this error. The code snippet provided involves signing in a user with email and password, handling exceptions, and returning the result.

Flutter, Cloud Firestore, Firebase Auth, and Firebase Database dependencies are specified in the project’s dependencies.

The expectation is to run the code without errors and authenticate the user seamlessly.

The Solutions:

Solution 1: Proper Credentials and Android Version

1. Provide valid email address and password instead of empty strings.

2. Make sure you are using the correct Android version supported by the Firebase libraries you are using.

Q&A

Cause for the issue?

Empty email and password, wrong android version.

Solution for the issue?

Enter non-empty email and password, correct android version.

Video Explanation:

The following video, titled "Unhandled Exception PlatformException, Unable to establish ...", provides additional insights and in-depth exploration related to the topics discussed in this post.

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