CodeBuild Output artifact not available

I have a codepipeline with some codebuild stages. When stage 1 of codebuild project finished, I can't see the output build artifact. The source artifact is available on S3. Problem is with build output artifact.

Error:

When I click on it I see: The object "terraform/BuildArtif/XeLscuU" was not found

My setup:

1. Codebuild runs on account A and assume a role from account B to deploy something to account B.
2. Codepiline role has this S3 permissions: "s3:*", "Resource": "*"
3. Codebuild project role has this permission:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": [
                "s3:DeleteObject",
                "s3:PutObject",
                "s3:Describe*",
                "s3:Get*",
                "s3:List*"
            ],
            "Effect": "Allow",
            "Resource": "*",
            "Sid": "VisualEditor0"
        }
    ]
}

4. Role on account B which I assume in a buildspec has administrator access.

5. My codebuild is in VPC, cross account access via transit gateway.

6. S3 bucket has those permissions:

   "Effect": "Allow",
            "Principal": {
                "AWS": [
                    "arn:aws:iam::accountA:role/service-role/codepipelinerole",
                    "arn:aws:iam::accountB:role/adminrole",
                    "arn:aws:iam::accountA:role/service-role/codebuildprojectrole"
                ]
            },
            "Action": [
                "s3:RestoreObject",
                "s3:ReplicateObject",
                "s3:PutObjectVersionTagging",
                "s3:PutObjectTagging",
                "s3:PutObjectAcl",
                "s3:PutObject",
                "s3:List*",
                "s3:Get*"
            ],
            "Resource": [
                "arn:aws:s3:::codepipeline-eu-west-1-accountA/*",
                "arn:aws:s3:::codepipeline-eu-west-1-accountA"