我有一个SvelteKit网站，它有几个路由（比如/和/about/），运行在一个带有adapter-node的Node.js服务器上。在本地先启动npm run build，再启动node build，一切正常，所有路由都可以访问：即加载localhost:4000/打开主页，localhost:4000/about打开关于页面。
然而，当我尝试将Node服务器置于具有条件路由的nginx反向代理之后时，除了顶级域之外的所有路由都停止工作，并进入重定向循环（301-> 308-> 301-> ...）。我做错了什么？
nginx服务器暴露于外部HTTP（S）流量，并设置为将所有与网站相关的请求路由到Node/SvelteKit服务器，***但***一些请求（/api/*）需要转到另一个端口（3000）上的另一个服务。因此，简单地将所有请求从nginx转发到带有location / { ... }的SvelteKit是不可能的。以下是当前路由的设置方式：

user nginx;
worker_processes 1;
pid /var/run/nginx.pid;
events {
    worker_connections 1024;
}

http {
    # SvelteKit server on port 3000
    upstream website {
        server website_server:3000;
    }

    # Another server for /api/ on port 5000
    upstream apis {
        server api_server:5000;
    }

    server {
        listen 80;
        listen 443 ssl; 
        listen [::]:443 ssl;
        ssl_certificate /etc/letsencrypt/live/mydomain.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/mydomain.com/privkey.pem;
        server_name mydomain.com www.mydomain.com;

        # Route all /api/ requests to API server
        location /api/ {
            proxy_pass http://apis;
            proxy_redirect off;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-NginX-Proxy true;
            proxy_set_header X-Forwarded-Proto $scheme;
        }

        # Route website requests to SvelteKit
        location = / {
            proxy_pass http://website;
            # ... Same proxy_redirect and other contents as previous location block
        }
        location = /about/ {
            # ... Same contents as previous location block
        }
        location /_app/ {
            # ... Same contents as previous location block
        }
        location /images/ {
            # ... Same contents as previous location block
        }
        location /css/ {
            # ... Same contents as previous location block
        }
        location /fonts/ {
            # ... Same contents as previous location block
        }
    }
}