Empty Deployed backend resources in AWS Amplify for Flutter project

I understand you're encountering an issue with your AWS Amplify Flutter project, specifically related to the amplify_outputs.json file and the amplify.yml file. This error typically occurs when the Amplify configuration is not properly set up or when the necessary files are missing.

For Flutter projects using AWS Amplify, the amplify_outputs.json file is crucial as it contains the configuration information needed to connect your app to the AWS backend services. If this file is not being generated in the backend tab, it could indicate an issue with your Amplify setup or build process.

To resolve this, you should ensure that your Amplify CLI is properly configured and that you've run the necessary commands to initialize and push your backend. Here are some steps you can try:

1. Make sure you've initialized Amplify in your project using amplify init.
2. Configure your desired services (API, Auth, Storage, etc.) using the appropriate Amplify CLI commands.
3. Push your changes to the cloud using amplify push.

After successfully pushing your changes, Amplify should generate the required configuration files, including amplify_outputs.json.

As for the amplify.yml file, this is typically used to define the build settings for your Amplify project. However, for a Flutter project, you might not need a complex amplify.yml file. A basic version could look like this:

version: 1
frontend:
phases:
build:
commands:
- flutter build web
artifacts:
baseDirectory: build/web
files:
- '**/*'
cache:
paths: []

This simple configuration tells Amplify to build your Flutter web app and use the resulting files for deployment.

If you're still encountering issues after trying these steps, you may need to check your Amplify project's overall configuration, ensure all dependencies are correctly installed, and verify that your Flutter environment is properly set up for Amplify integration.

Remember to run flutter pub get to fetch the latest dependencies, and make sure you've added the necessary Amplify packages to your pubspec.yaml file.

If the problem persists, you might want to consider reinitializing your Amplify project or reaching out to AWS support for more specific troubleshooting based on your project's configuration.

Sources
AWS Amplify FAQs | Front-End Web & Mobile | Amazon Web Services
Full Stack Development - Web and Mobile Apps - AWS Amplify