Deployment to CCV2 fails due to missing extension

I am receiving the following error when doing a deployment

unkown web root '/mystorefront' cannot find any mapped extension

I have the mystorefront extension in my localextension.xml file

manifest useConfig, I have

        "extensions": {
            "location": "config/localextensions.xml",
            "exclude": [
                "azurecloudhotfolder",
                "cloudcommons",
                "cloudhotfolder"
            ]

manifest accstorefront aspect I have the following

          "name": "accstorefront",
            "properties": [
                {
                    "key": "spring.session.enabled",
                    "value": "true"
                },
                {
                    "key": "storefrontContextRoot",
                    "value": ""
                },
                {
                    "key": "task.engine.loadonstartup",
                    "value": "false"
                }
            ],
            "webapps": [
                {
                    "name": "mediaweb",
                    "contextPath": "/medias"
                },
                {
                    "name": "mystorefront",
                    "contextPath": ""
                },
                {
                    "name": "acceleratorservices",
                    "contextPath": "/acceleratorservices"
                },
                {
                    "name": "paymetric",
                    "contextPath": "/paymetric"
                },
                {
                    "name": "mycommercewebservices",
                    "contextPath": "/mycommercewebservices"
                }
            ]
        },

What am I missing or have not set correctly