React - bundle.js not found (using Nginx setup) - reactjs

Question

I have a React app set up to run on port 8080. When I run the deployed project using http://example.com:8080, it runs well.
However, I'm using nginx to proxy this url, adding the "location /admins" to etc/nginx/nginx.conf:
server {
listen 80;
server_name localhost;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
root html;
index index.html index.htm;
}
location /admins {
proxy_pass "http://hadas-ex.co.il:8080";
}
Then, when browsing to hadas.ex.co.il/admins, it serves the app, but I get the following error in my console:
GET http://hadas-ex.co.il/static/js/bundle.js net::ERR_ABORTED 404 (Not Found)
I'm just confused as to why I'm getting this error, as it's working fine when accessing the hadas-ex.co.il:8080 directly.

Answer 1

Port 80 and Port 8080 are not the same. Ports are used to make connections unique and range from 0 to 65535 out of which upto 1024 are called well known ports which are reserved by convention to identify specific service types on a host. 80 is reserved for HTTP. Port 8080 is typically used for a personally hosted web server, when the ISP restricts this type of usage for non-commercial customers. Port 8080 is the just the default second choice for a webserver.
Resources:
Are-port-80-and-8080-the-same
Apache-httpd-vs-tomcat-7-port-80-vs-port-8080