Nginx[emerg] Директива "map" не разрешена в /etc/nginx/sites-enabled/default:1

Это мой файл /etc/nginx/sites-enabled/default

Это мой /etc/nginx/nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
        worker_connections 768;
        # multi_accept on;
}

http {

        ##
        # Basic Settings
        ##
        client_max_body_size 10M;
        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ##
        # SSL Settings
        ##

        #ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
        #ssl_prefer_server_ciphers on;

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##

        gzip on;

        gzip_vary on;
        gzip_proxied any;
        gzip_comp_level 6;
        gzip_buffers 16 8k;
        gzip_http_version 1.1;
        gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        ##
        # Virtual Host Configs
        ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}

#mail {
#       # See sample authentication script at:
#       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
#       # auth_http localhost/auth.php;
#       # pop3_capabilities "TOP" "USER";
#       # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
#       server {
#               listen     localhost:110;
#               protocol   pop3;
#               proxy      on;
#       }
#
#       server {
#               listen     localhost:143;
#               protocol   imap;
#               proxy      on;
#       }
#}

Мой синтаксис конфигурации nginx выглядит нормально

#sudo nginx -t

nginx: [warn] conflicting server name "api.example.in" on 0.0.0.0:80, ignored
nginx: [warn] conflicting server name "admin.example.in" on 0.0.0.0:80, ignored
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Мой журнал ошибок nginx показывает

2024/04/16 15:22:21 [emerg] 3741#3741: "map" directive is not allowed here in /etc/nginx/sites-enabled/default:1
2024/04/16 15:30:40 [warn] 3777#3777: conflicting server name "api.example.in" on 0.0.0.0:80, ignored

И я получаю код http-ответа 500.

Это началось, когда я изменил имя_сервера с example.com на aaa.com, а затем снова изменил на example.com. До этого он работал без каких-либо проблем.

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