Hi Team,

My portal name is lets say fs.example.com and it is configured on apache server which is then proxied to internet using Nginx reverse proxy. However I tried everything I was aware of and I am consistently getting below error whenever this URL is accessed. I am running out of ideas about troubleshooting the issue and I need a help on it. Here is Nginx config file

```
server {
listen 443 http2 ssl;
server_name fs.example.com;
ssl_protocols TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_session_cache shared:SSL:10m;
ssl_certificate /etc/nginx/ssls/isncert/isnwild.crt;
ssl_certificate_key /etc/nginx/ssls/isncert/star.key;
ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:E
CDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256
-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RS
A-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:
DES-CBC3-SHA:!DSS';
ssl_dhparam /etc/ssl/dhparams2048.pem;
ssl_session_timeout 1d;
ssl_session_tickets off;
ssl_stapling on;
ssl_stapling_verify on;
resolver 8.8.8.8 8.8.4.4 valid=300s;
include /config/nginx/authelia.conf;
access_log /var/log/nginx/fs/access.log;
error_log /var/log/nginx/fs/error.log;
location / {
client_max_body_size 10m;
#proxy_headers_hash_max_size 512;
proxy_headers_hash_bucket_size 128;
proxy_busy_buffers_size 256k;
proxy_temp_file_write_size 256k;
proxy_buffers 4 256k;
proxy_buffer_size 16k;
proxy_pass http://fs.example.com;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
add_header X-Content-Type-Options nosniff;
add_header X-XSS-Protection "1; mode=block";
add_header Referrer-Policy "no-referrer-when-downgrade";
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
include /config/nginx/auth.conf;
include /config/nginx/restconfig.conf;
}
}
```

And here is the error

Bad Request
Your browser sent a request that this server could not understand.