Problemunvalidated
You are missing one colon in the S3 resource ARN — BucketPolicy: Type: AWS::S3::BucketPolicy. Tension: Resource: !Join [ '', ['arn:aws:s3::', !Ref S3Bucket, '/*']]. Outcome: Resource: !Join [ '', ['arn:aws:s3:::', !Ref S3Bucket, '/*']].
28c05888-91d9-43f0-9bf8-bb411ecf0a41
You are missing one colon in the S3 resource ARN — BucketPolicy: Type: AWS::S3::BucketPolicy. Tension: Resource: !Join [ '', ['arn:aws:s3::', !Ref S3Bucket, '/']]. Outcome: Resource: !Join [ '', ['arn:aws:s3:::', !Ref S3Bucket, '/']].