problem with sitemap

[Nubi KR]

Everything is alright.
NodeBB running without problem, applied ssl, and did configuration for reconnecting www to non-www and config.json for nodebb(put my non-www domain example.com in it).

But only problem is sitemap.
I've tried to fix this problem for 3 days but still having problem with sitemap.

NodeBB is showing my sitemap at 'example.com/sitemap.xml' but google search console can't read my sitemap.

I've tried putting
https://example.com/sitemap.xml
http://example.com/sitemap.xml
https://www.example.com/sitemap.xml
http://www.example.com/sitemap.xml
but search console can't read all of them.

I think something is wrong with nginx configuration or SSL applying maybe..
Cuz I did everything same as official installation guide, but did different for those.

Here's my nginx default file

# Default HTTPS server configuration
server {
    listen 443 ssl http2 default_server;
    listen [::]:443 ssl http2 default_server;
    server_name example.com;
 
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    ssl_trusted_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    include /etc/nginx/snippets/ssl.conf;

    access_log /var/log/nginx/example.com.access.log;
    error_log /var/log/nginx/example.com.error.log;
 
    location / {
        proxy_set_header X-Real-IP $remote_addr;
	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
	proxy_set_header X-Forwarded-Proto $scheme;
	proxy_set_header Host $http_host;
	proxy_set_header X-NginX-Proxy true;

	proxy_pass http://127.0.0.1:4567;  # no trailing slash
	proxy_redirect off;

	# Socket.IO Support
	proxy_http_version 1.1;
	proxy_set_header Upgrade $http_upgrade;
	proxy_set_header Connection "upgrade";
    }
 
    location ~ /\.ht {
        deny all;
   }
}
 
# HTTPS www. server configuration
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name www.example.com;
 
    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
    ssl_trusted_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    include /etc/nginx/snippets/ssl.conf;
 
    location / {
        return 301 https://example.com$request_uri;
    }
}
 
 
# Default server configuration
server {
    listen 80;
    listen [::]:80 default_server;
    server_name example.com;
 
    include /etc/nginx/snippets/letsencrypt.conf;
 
    location / {
        return 301 https://example.com$request_uri;
    }
}
 
# HTTP - CNAME Connect www.example.com to example.com
server {
    listen 80;
    listen [::]:80;
    server_name www.example.com;
 
    include /etc/nginx/snippets/letsencrypt.conf;
 
    location / {
        return 301 https://example.com$request_uri;
    }
}

Anyone know solution, help me plz

[dunlix]

@nubi-kr I don't know that much about this... but it might be your nodebb config file. It might be set to "example.com" (your URL) and will go to www.that, but maybe you need to change it to what it is when you visit it. Try putting www.yoururl.com

[Nubi KR]

@dunlix thx for replying

domain i'm currently using is non-www so config.json must be non-www
I tried what u said, still not working..

too sad

[dunlix]

@nubi-kr Does visiting your site without https even work? Try going to http://example.com instead of https://example.com

[Nubi KR]

@dunlix yes
with https and or not
with www and or not

all 4 connects to https://example.com

[dunlix]

@nubi-kr does visiting the sitemap yourself work? type in your url with /sitemap.xml at the end. Otherwise I don't really know whats wrong with it.

[Nubi KR]

@dunlix yes
if i go to
https://example.com/sitemap.xml
then sitemap shows up, like

...
https://example.com/sitemap/topic.1.xml
...

this kind of things in it
i can access to all those sitemap files but google can't

[dunlix]

@nubi-kr hmm ok well then I don' think there's any problem on your end, make sure you gave google correct URL, try re-indexing, but im sorry i dont know how to help.

[Nubi KR]

@dunlix Thx for replying tho
it can be google's problem maybe

[dunlix]

@nubi-kr yeah i went crazy when youtube was down a few minutes a few months ago lol

[Nubi KR]

@dunlix I think it is google's problem

Yoast sitemap not Submitting - Couldn't Fetch Error - Google Search Central Community

(support.google.com)

just same as my case.
answer in this link said

Your sitemap can be processed by google ranging from 24 hours to 24 days (even 1 month + in some rare case)