forward-auth 302 problem

[thor533]

Description

When I used the forward-auth plugin, when the authentication failed, I wanted to return to the authentication page, but I got a blank page, please help to check, the official documentation is too simple

{
    "id": "459715989806777025",
    "create_time": 1683541682,
    "update_time": 1683598548,
    "uris": [
        "/test/*",
        "/**"
    ],
    "name": "forwardauth",
    "desc": "forwardauth",
    "priority": 1,
    "methods": [
        "GET",
        "POST",
        "PUT",
        "DELETE",
        "PATCH",
        "HEAD",
        "OPTIONS"
    ],
    "plugins": {
        "forward-auth": {
            "client_headers": [
                "http://10.210.21.123:80"
            ],
            "disable": false,
            "request_headers": [
                "Cookie",
                "Authorization",
                "Host"
            ],
            "request_method": "POST",
            "upstream_headers": [
                "Cookie",
                "Authorization",
                "Host"
            ],
            "uri": "http://192.168.97.47:8088/ssoserver/get/authentication/forwardauth"
        }
    },
    "upstream": {
        "nodes": [
            {
                "host": "10.210.21.105",
                "port": 9001,
                "weight": 1
            }
        ],
        "retries": 1,
        "timeout": {
            "connect": 6,
            "send": 6,
            "read": 6
        },
        "type": "roundrobin",
        "scheme": "http",
        "pass_host": "pass",
        "keepalive_pool": {
            "idle_timeout": 60,
            "requests": 1000,
            "size": 320
        }
    },
    "labels": {
        "API_VERSION": "forwardauth"
    },
    "status": 1,
    "uri": "/test/*,/**"
}

the result:

no error log

Environment

• APISIX version (run apisix version):2.15-alpine
• Operating system (run uname -a):
• OpenResty / Nginx version (run openresty -V or nginx -V):
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info):
• APISIX Dashboard version, if relevant:
• Plugin runner version, for issues related to plugin runners:
• LuaRocks version, for installation issues (run luarocks --version):