Issue with State Machine Loading – "Failed to fetch" Error

The error you're experiencing with your state machine could be due to a few different factors. Here are some potential causes and troubleshooting steps you can try:

1. Network connectivity issues: Ensure that you have a stable internet connection. Sometimes, temporary network disruptions can cause "Failed to fetch" errors.

2. Browser cache or cookies: Try clearing your browser cache and cookies, then restart your browser and attempt to access the state machine again.

3. AWS console temporary glitch: It's possible that there's a temporary issue with the AWS Step Functions console. Wait a short while and try again later.

4. IAM permissions: Verify that your IAM user or role still has the necessary permissions to access and view Step Functions resources. Sometimes, permission changes can cause unexpected access issues.

5. AWS service status: Check the AWS Service Health Dashboard to see if there are any ongoing issues with Step Functions or related services in your region.

6. SSL/TLS certificate issues: In some cases, certificate validation problems can cause connection errors. Ensure your system's root certificates are up to date and that your computer's clock is accurately synchronized.

7. Firewall or security software: Temporarily disable any firewall or security software to see if it's interfering with the connection to AWS services.

If none of these steps resolve the issue, you may need to contact AWS support for further assistance. They can help investigate if there's an underlying problem with the service or your specific account.
Sources
Dispatch failure | AWS re:Post

It was actually because of the cookies