Почему получаю ошибку в nginx?

Question

[Любитель поиграть в самолёты]

Вот код:

upstream personal_portfolio {
    server web:8000;
}

if (${USE_SSL} = True) {
        server {

    listen 443 ssl;
    

    location / {
        proxy_pass http://personal_portfolio;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_redirect off;
    }
    location /static/ {
        alias /home/app/web/staticfiles/;
    }
    location /media/ {
        alias /home/app/web/mediafiles/;
    }

}
    }

server {

    listen 80;
    

    location / {
        proxy_pass http://personal_portfolio;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_redirect off;
    }
    location /static/ {
        alias /home/app/web/staticfiles/;
    }
    location /media/ {
        alias /home/app/web/mediafiles/;
    }

}

Вот ошибка:

ginx: [emerg] "if" directive is not allowed here in /etc/nginx/conf.d/nginx.conf:5

Что делать?