Requesting Access For Editing Bucket Policy

Hi, First of all, your labs are great to work on. I was performing the lab “Lab: Static Website” under the course "Amazon Simple Storage Service (Amazon S3) " The question in my lab requires me to update a bucket policy for making my static website visible to public user. Even it is mentioned in the solution of it. But unfortunately I am getting the attached error in my S3 bucket. Requested to please resolve it and let me know. Or if I am doing something wrong please let me know how can I make it work. Hoping for early response.