@Marvin, can you tell me how to fix the following error? Flow run could not be submitted to infrastructure: An error occurred (InvalidParameterException) when calling the RunTask operation: At least one security group must be supplied when specifying subnets that are owned by a different account.

The issue you're facing is related to AWS infrastructure configuration when running Prefect flows. Here's a detailed approach to resolve the problem: ### Error Explanation: When specifying subnets, AWS requires at least one security group associated with those subnets, especially if they are owned by a different account. This is a common network configuration requirement to ensure secure communication within your VPC (Virtual Private Cloud). ### Steps to Resolve: 1. Verify Security Groups: Ensure that you have specified at least one security group associated with the subnets in your ECS task definition. 2. Check Subnet and Security Group Configuration: Make sure the subnets and security groups are correctly set up and that they exist in the target AWS account. 3. Modify Task Definition (if required): If necessary, update your ECS task definition to include the correct security groups. 4. Inspect IAM Permissions: Ensure that the IAM role you are using has permissions to describe security groups in the target AWS account. ### Example Configuration Update: Here's an example of how you might specify the security groups and subnets in your task definition:

json
{
  "networkConfiguration": {
    "awsvpcConfiguration": {
      "subnets": ["subnet-xxxxxxxx","subnet-yyyyyyyy"],
      "securityGroups": ["sg-xxxxxxxx"],
      "assignPublicIp": "ENABLED"
    }
  }
}

### References: 1. AWS Documentation on VPC Configurations 2. Prefect Infrastructure Documentation Make sure to double-check that the security groups and subnets are properly configured and that they meet the requirement of being correctly associated with each other. For additional context, you may find detailed discussions and solutions in relevant AWS and Prefect documentation. If problems persist, consulting the AWS support team for verification of your network setup could be beneficial.