can't access property "impersonate_user", e is null

When I go to https://netvs.scc.kit.edu/login I get the following error message before I even try to login or click anything. There is no real problem, I can close the error message and start working.

{
    "fileName": "https://netvs.scc.kit.edu/js/app.07ab35b6.js",
    "lineNumber": 1,
    "columnNumber": 346697,
    "message": "can't access property \"impersonate_user\", e is null",
    "route_info": {
        "path": "/dnsvs/bcds"
    },
    "session_info": {
        "browser": {
            "app_code_name": "Mozilla",
            "vendor": "",
            "user_agent": "Mozilla/5.0 (X11; Linux x86_64; rv:141.0) Gecko/20100101 Firefox/141.0"
        },
        "login_name": null
    },
    "netvs": {
        "build_id": "d8002197,Job ID 1737215@",
        "sysinfo": {
            "version": "beta",
            "version_name": "Grågylling",
            "mods": [
                "login_oic",
                "macfinder",
                "dhcp_leases",
                "ip_contact",
                "domain_finder",
                "patch_request"
            ],
            "host_oper_mode": {
                "is_devel": false,
                "is_prod": true,
                "is_test": false,
                "mode": "prod"
            },
            "js_mods": [
                "dnsvs",
                "macauth",
                "macfinder",
                "patchrequest",
                "dhcp_leases",
                "ip_contact",
                "domainfinder",
                "netdoc",
                "login_oic"
            ],
            "netdb_admin_base": "https://admin.netdb.scc.kit.edu"
        }
    }
}