CloudFormation stack Error

Dear AWS Support Team,

I hope this message finds you well. I am writing to seek assistance with a CloudFormation issue that I have encountered while working with my AWS resources.

I have been attempting to deploy a CloudFormation stack using the following template [https://solutions-reference.s3.amazonaws.com/qnabot-on-aws/latest/qnabot-on-aws-main.template]. However, during the stack creation/update process, I encountered the following error:

[The following resource(s) failed to create: [ImportStack], S3 error: Access Denied]

To provide you with more context, here are some additional details about my environment:

AWS Region: [US East (N. Virginia)]

I have already reviewed the AWS documentation and forums, but I was unable to find a solution that resolves this specific issue.

Could you kindly assist me in identifying the root cause of the error and guide me on the necessary steps to resolve it? If there are any additional logs or information required, please let me know, and I will be more than happy to provide them.

I appreciate your prompt attention to this matter and look forward to your valuable guidance to ensure a successful deployment of my CloudFormation stack.

Thank you very much for your support.

Best regards, Prerit