Solved Error : Target kernel_snapshot failed: Exception in Flutter

Solution 1

To resolve the error, we followed the steps outlined below:

1. Deleted Cache Folder: We navigated to C/$user_name/AppData/Local/Pub and deleted the cache folder.
2. Manually Updated Packages: We manually updated all packages in our project, including flutter_local_notifications.
3. Added Dependency Override: We added the modal_bottom_sheet package under dependency_overrides in our pubspec.yaml file:

modal_bottom_sheet:
      git:
        url: https://github.com/danReynolds/modal_bottom_sheet.git
        path: modal_bottom_sheet

4. Executed Flutter Clean: We ran flutter clean to clean the project build.
5. Successfully Ran the Project: Finally, we were able to run our project successfully after completing these steps.

In our opinion, this solution provides a systematic approach to resolving the error. By deleting the cache folder, updating packages, adding dependency overrides, and cleaning the project, we were able to address potential issues related to package dependencies and project build artifacts. This comprehensive approach helped ensure a successful execution of our project.

Solution 2

The error "Target kernel_snapshot failed: Exception: Errors during snapshot creation: null build failed" typically occurs in Flutter development when there are issues with snapshot creation during the build process. To resolve this error, you can try the following steps:

1. Clean Build: Start by cleaning your project's build files. This can help in resolving any cached or corrupted build artifacts that might be causing the error. You can do this by running:

flutter clean

2. Update Dependencies: Check that your project's dependencies, including Flutter and Dart, are up to date. You can do this by running:

flutter pub get

3. Check for Flutter SDK Updates: Verify that you are using the latest version of the Flutter SDK. If not, consider upgrading to the latest stable version:

flutter upgrade

4. Check Project Structure: Ensure that your project's directory structure and configuration files are set up correctly. Double-check files like pubspec.yaml for any syntax errors or inconsistencies.
5. Disable Obfuscation: Try disabling code obfuscation temporarily to see if it resolves the issue. You can do this by modifying your Flutter project's build configuration. For example, in your pubspec.yaml file:

flutter:
  obfuscate: false

6. Update SDK Constraints: If you are using any plugins or packages with specific SDK version constraints, make sure they are compatible with the version of Flutter you are using. Adjust SDK constraints if necessary.
7. Check System Resources: Check that your system has enough resources (RAM, disk space) to perform the build process. Insufficient resources can sometimes lead to build failures.
8. Run with Verbose Output: Run the build process with verbose output enabled to get more detailed error messages. This can help in identifying the specific cause of the snapshot creation failure.

flutter build <platform> --verbose

Solution 3

When encountering compatibility issues with engines and frameworks, we need to ensure that we're using compatible versions. We can try either updating flutter/flutter to a newer version or rolling back flutter/engine to an older version.

If these steps don't resolve the issue, we can attempt changing the Flutter channel to 'stable' using the following command:

flutter channel stable

After changing the channel, we should upgrade Flutter:

flutter upgrade

It's important to reopen the editor or IDE to ensure it's using the new engine version. Once verified, we can proceed to run our project again.

Straightforward approach to address compatibility issues by ensuring alignment between the Flutter framework and engine versions. By updating or rolling back as needed and switching to the stable channel, we can maintain a stable development environment and resolve potential conflicts.

Solution 4

We face a similar issue recently and resolved it by following these steps:

1. Switched to Latest Stable Version of Flutter: We used the commands flutter channel stable followed by flutter upgrade to switch to the latest stable version of Flutter. At the time of writing, the latest stable version was 3.16.
2. Updated Flutter Plugin in Android Studio: We noticed that the Flutter plugin in Android Studio had been updated, prompting us to consider updating Flutter itself.
3. Considered Compatibility with Plugin Version: Seeing a version number containing "16" in the plugin update, we speculated that it might require Flutter version 3.17.x for compatibility.
4. Resolved the Problem: After upgrading to the latest stable version of Flutter (3.16.4), the issue disappeared, indicating that the problem was likely due to compatibility between the Flutter plugin and the Flutter framework version.

Maintaining compatibility between different components of the development environment, such as the Flutter plugin and the Flutter framework.

Solution 5

We encountered an error during our build process indicating that the cloud_firestore_platform_interface package version 5.7.7 references a FallThroughError class which no longer exists in Dart 3.0. This error typically arises when dependencies are too old for the current Flutter version.

To resolve this issue, we followed these steps:

1. Checked cloud_firestore Version: We checked the version of cloud_firestore and found that according to its changelog, we needed at least version 4.7.0 to avoid compatibility issues.
2. Identified Outdated Dependencies: We ran flutter pub outdated on our project to identify any outdated dependencies.
3. Upgraded Dependencies: Based on the output of flutter pub outdated, we proceeded to upgrade the dependencies either manually or by running flutter pub upgrade.