I want to access kibana dashboard using proxy server. Have this nginx config.

server {
    listen 443 ssl;
    server_name kibana-bi.test.com www.kibana-bi.test.com;

    ssl_certificate           /etc/letsencrypt/live/kibana-bi.test.com/fullchain.pem;
    ssl_certificate_key       /etc/letsencrypt/live/kibana-bi.test.com/privkey.pem;

    rewrite ^/$ https://kibana-bi.test.com/_plugin/_dashboards redirect;

    location /_plugin/_dashboards {
        # Forward requests to Dashboards
        proxy_pass https://vpc-test-bi-vksjhfkjsdfhkjsdfhkjsdfh.us-west-2.es.amazonaws.com/_plugin/_dashboards;

        # Handle redirects to Cognito
        proxy_redirect https://test.auth.us-west-2.amazoncognito.com https://kibana-bi.test.com;

        # Update cookie domain and path
        proxy_cookie_domain vpc-test-bi-vksjhfkjsdfhkjsdfhkjsdfh.us-west-2.es.amazonaws.com kibana-bi.lineate.com;
        proxy_cookie_path / /_plugin/_dashboards/;

        # Response buffer settings
        proxy_buffer_size 128k;
        proxy_buffers 4 256k;
        proxy_busy_buffers_size 256k;
    }

    location ~ /(log|sign|fav|forgot|change|saml|oauth2) {
        # Forward requests to Cognito
        proxy_pass https://test.auth.us-west-2.amazoncognito.com;

        # Handle redirects to Dashboards
        proxy_redirect https://vpc-test-bi-vksjhfkjsdfhkjsdfhkjsdfh.us-west-2.es.amazonaws.com https://kibana-bi.test.com;

        # Update cookie domain
        proxy_cookie_domain test.auth.us-west-2.amazoncognito.com kibana-bi.test.com;
    }
}

When open kibana-bi.test.com has this error {“Message”:”Your request: ‘/_plugin/_dashboards’ is not allowed.”}