First login after Account Migration throws Error

My account has recently been migrated to a new one, and logging in for the first Time I got the Error below.

After logging in again, with the new account it worked and the account seems to behave just like the old one before it.

{
    "failed_response": {
        "message": "Oops! Something went wrong. There goes a rainbow...",
        "reason": "ERROR: Something went wrong: {\"error\":\"unknown_error\",\"error_description\":\"For more on this error consult the server log.\"}",
        "path": "/api/oic_create_token",
        "query": "state=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdGF5X2xvZ2dlZF9pbiI6ZmFsc2UsInRpbWUiOiIxNzY0NzgxNDA0IiwicmVkaXJlY3RfdXJpIjoiaHR0cHM6Ly9uZXR2cy5zY2Mua2l0LmVkdS9vaWNfbG9naW4iLCJub25jZSI6InZvV09lQWJwcDVzM1Vkcm0ifQ.O8lPzmc1P07NdBylmNtNavQKnQ_7RVWtgEhYR0UzvRY&session_state=697207b4-ef4c-414a-bd83-865d32f79a93&iss=https%3A%2F%2Foidc.scc.kit.edu%2Fauth%2Frealms%2Fkit&code=eddf7941-9449-4d3a-8770-708b72ac016d.697207b4-ef4c-414a-bd83-865d32f79a93.e4be3ee1-ad59-42b6-84b2-ee141102133c",
        "time": "2025-12-03 18:03:45"
    },
    "request": {
        "url": "/api/oic_create_token?state=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdGF5X2xvZ2dlZF9pbiI6ZmFsc2UsInRpbWUiOiIxNzY0NzgxNDA0IiwicmVkaXJlY3RfdXJpIjoiaHR0cHM6Ly9uZXR2cy5zY2Mua2l0LmVkdS9vaWNfbG9naW4iLCJub25jZSI6InZvV09lQWJwcDVzM1Vkcm0ifQ.O8lPzmc1P07NdBylmNtNavQKnQ_7RVWtgEhYR0UzvRY&session_state=697207b4-ef4c-414a-bd83-865d32f79a93&iss=https%3A%2F%2Foidc.scc.kit.edu%2Fauth%2Frealms%2Fkit&code=eddf7941-9449-4d3a-8770-708b72ac016d.697207b4-ef4c-414a-bd83-865d32f79a93.e4be3ee1-ad59-42b6-84b2-ee141102133c"
    },
    "route_info": {
        "path": "/oic_login"
    },
    "session_info": {
        "browser": {
            "app_code_name": "Mozilla",
            P0+r4B31\P0+r4B33\P0+r4B34\"vendor": "",
            "user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:145.0) Gecko/20100101 Firefox/145.0"
        },
        "login_name": null
    },
    "netvs": {
        "build_id": "268cb3cd,Job ID 1895371@",
        "sysinfo": {
            "version": "beta",
            "version_name": "Grågylling",
            "mods": [
                "login_oic",
                "macfinder",
                "dhcp_leases",
                "ip_contact",
                "domain_finder",
                "patch_request",
                "bcd_request",
                "vpn_vlan_request",
                "wifi_vlan_request"
            ],
            "host_oper_mode": {
                "is_devel": false,
                "is_prod": true,
                "is_test": false,
                "mode": "prod"
            },
            "js_mods": [
                "ip_contact",
                "macfinder",
                "login_oic",
                "bcdrequest",
                "patchrequest",
                "domainfinder",
                "netdoc",
                "dnsvs",
                "macauth",
                "dhcp_leases"
            ],
            "netdb_admin_base": "https://admin.netdb.scc.kit.edu"
        }
    }
}