The Short Answer

To fix the “API” error in amplify, update your GraphQL schema to match the latest AWS API requirements, ensuring that all resolvers are properly configured. This can be achieved by running the command amplify api update and then redeploying your API using amplify push.

Why This Error Happens

• Reason 1: The most common cause of this error is an outdated or mismatched GraphQL schema, which can occur when the schema is not properly updated after changes to the API or data models. For example, if you’ve added a new field to a model but haven’t updated the schema, this can cause the API to fail.
• Reason 2: An edge case cause of this error is a misconfigured AWS IAM role or policy, which can prevent the amplify API from accessing necessary resources. This can happen if the role or policy is not properly set up or if there are conflicting permissions.
• Impact: The impact of this error can be significant, as it can prevent the API from functioning correctly, leading to errors and downtime for users. In AWS, this can result in increased latency, errors, and even data loss if not addressed promptly.

Step-by-Step Solutions

Method 1: The Quick Fix

1. Go to amplify.yml > api > schema
2. Toggle useGraphqlSchema to On
3. Refresh the page and run amplify api update to apply the changes.

Method 2: The Command Line/Advanced Fix

To fix the issue using the command line, run the following commands:

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amplify api update
amplify push --api

This will update the GraphQL schema and redeploy the API, ensuring that all changes are properly applied.

Prevention: How to Stop This Coming Back

To prevent this error from occurring in the future, make sure to:

• Regularly update your GraphQL schema to match changes to your API or data models
• Use the amplify api update command to ensure that your schema is up-to-date
• Monitor your API logs for errors and warnings, and address any issues promptly

If You Can’t Fix It…

[!WARNING] If amplify keeps crashing, consider switching to AWS AppSync which handles GraphQL schema natively without these errors.

FAQ

Q: Will I lose data fixing this? A: No, updating the GraphQL schema and redeploying the API should not result in data loss. However, it’s always a good idea to back up your data before making any changes.

Q: Is this a bug in amplify? A: This issue is not a bug in amplify, but rather a configuration issue that can occur when the GraphQL schema is not properly updated. Amplify version 7.0.0 and later include improved error handling and logging to help diagnose and fix this issue.

📚 Continue Learning

Check out our guides on amplify and API.