HTTP Authentication - Authorization Required on API calls

Hello,

I put an HTTP Authorization on my server and it always worked. Recently i changed the subdomain and now I can access to the login page but when I'm trying to send an API call for the login, I receive an "401 Authorization Required" response and I don't know why.

I tried many different configurations but I'm still stuck. Can you help me on this topic please ?

Please find below my conf. Many thanks for your precious help

# FORGE CONFIG (DOT NOT REMOVE!)
include forge-conf/staging.mysite.io/before/*;

map $sent_http_content_type $expires {
    "text/html"                 epoch;
    "text/html; charset=utf-8"  epoch;
    default                     off;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name subdomain.staging.mysite.io;
    root /home/forge/staging.mysite.io/;

    # FORGE SSL (DO NOT REMOVE!)
    ssl_certificate /etc/nginx/ssl/staging.mysite.io/xxxxxx/server.crt;
    ssl_certificate_key /etc/nginx/ssl/staging.mysite.io/xxxxxx/server.key;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers TLS13-AES-256-GCM-SHA384:TLS13-CHACHA20-POLY1305-SHA256:TLS_AES_256_GCM_SHA384:TLS-AES-256-GCM-SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS-CHACHA20-POLY1305-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA;
    ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/nginx/dhparams.pem;

    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Content-Type-Options "nosniff";

    charset utf-8;

    gzip            on;
    gzip_types      text/plain application/xml text/css application/javascript;
    gzip_min_length 1000;

    # FORGE CONFIG (DOT NOT REMOVE!)
    include forge-conf/staging.mysite.io/server/*;

    location / {
        expires $expires;
        proxy_set_header Host               $host;
        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_redirect              off;
        proxy_read_timeout          1m;
        proxy_connect_timeout       1m;
        proxy_pass                          http://127.0.0.1:3000; # set the address of the Node.js
        
        auth_basic "Staff Only";
        auth_basic_user_file "/home/forge/staging.mysite.io/.htpasswd";
    }
    
    access_log off;
    error_log  /var/log/nginx/staging.mysite.io-error.log error;
    
    location ~ /\.(?!well-known).* {
        deny all;
    }
}

# FORGE CONFIG (DOT NOT REMOVE!)
include forge-conf/staging.mysite.io/after/*;