When aws s3 gaufrette adapter is used for bitbag_sylius_cms_plugin_media filesystem - path gets resolved incorrectly

[gigabites19]

Steps to reproduce

1. Override bitbag_sylius_cms_plugin_media adapter

knp_gaufrette:
    adapters:
        bitbag_sylius_cms_plugin_media:
            aws_s3:
                service_id: Aws\S3\S3Client
                bucket_name: "%env(AWS_S3_BUCKET)%"
                detect_content_type: true
                options:
                    acl: public-read

2. Upload media from sylius admin and check resolved path in bucket
   

Removing forward slash concatenation here resolves it but I have not checked how it plays when other type of adapter is used