S3 PutObject Access Denied when deploying to - amazon-web-services

Question

I want to create an IAM user whose sole job is to deploy to AWS S3 Static Website.
I have this policy given to my DeployUser:
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "VisualEditor0",
"Effect": "Allow",
"Action": [
"s3:ListBucket"
],
"Resource": "arn:aws:s3:::www.<my-site-name>.com"
},
{
"Effect": "Allow",
"Action": [
"s3:GetObject",
"s3:PutObject",
"s3:PutBucketAcl",
"s3:DeleteObject"
],
"Resource": "arn:aws:s3:::www.<my-site-name>.com/*"
}
]
}
And this is my bucket policy:
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "PublicReadGetObject",
"Effect": "Allow",
"Principal": "*",
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::www.<my-site-name>.com/*"
}
]
}
And this is the issue I get when I deploy (I am using Github Actions for this):
upload failed: public/404.html to s3://www.<my-site-name>.com/404.html An error occurred (AccessDenied) when calling the PutObject operation: Access Denied
In Github, I passed the access key and secret of the user to my Action. I am pretty sure it is using that user to do the transaction. When I give S3FullAccess, my user is able to do it just fine. But I want to create a user with the AWS actions it only needs.
Where can I see better logs of this IAM user's actions?

Answer 1

Based on the comments, the solution was to add PutObject in the backed policy for the DeployUser.