change password Faild with reverse proxy

[remydev]

Changing password does not work with reverse proxy

Hello, hello.
I have a reverse proxy (nginx) in front of me
I have done several tests, there doesn't seem to be any problem, except to change the password.
Do you have an idea?
I would like to point out that this works with direct access (without reverse proxy)

I work with alpinelinux

My setup on the reverse proxy (front) :

server {
listen       80;
listen       [::]:80;
server_name  forum.mydomaine.com;
root         /var/www/localhost/htdocs;
#path to certobot validation
location /.well-known/acme-challenge {
   root /var/www/localhost/htdocs/certbot_validation/;
   }
rewrite ^ https://$server_name$request_uri? permanent;
error_page   500 502 503 504  /50x.html;
location = /50x.html {
root  /var/www/htdocs;
}
}
server {
listen 443 ssl http2;
listen [::]:443 ssl http2 ;
server_name  forum.mydomaine.com;
ssl on;
ssl_protocols TLSv1.2;
#Certificat
ssl_certificate /etc/letsencrypt/live/forum.mydomaine.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/forum.mydomaine.com/privkey.pem;
ssl_trusted_certificate /etc/letsencrypt/live/forum.mydomaine.com/chain.pem;
#Diffie-Hellman
 #ssl_dhparam /etc/ssl/private/dh4096.pem;
 ssl_ecdh_curve secp384r1;
#Ciphers
ssl_ciphers EECDH+AESGCM:EECDH+CHACHA20:EECDH+AES;
ssl_prefer_server_ciphers on;
#Paramètres TLS
ssl_session_cache shared:SSL:10m;
ssl_session_timeout 5m;
ssl_session_tickets off;
#OCSP Stapling
 resolver 89.234.141.66  valid=300s;
resolver_timeout 5s;
ssl_stapling on;
ssl_stapling_verify on;
#file transfert /nextcloud options
client_max_body_size    3012M;
  #HSTS
 #add_header Strict-Transport-Security "max-age=31536000;";   
#path to certobot validation
location /.well-known/acme-challenge {
   root /var/www/localhost/htdocs/certbot_validation/;
}
#normal redirection
 location / {
       proxy_pass https://192.168.0.198/;
 }
}

on the nodebb serveur it's the default configuration

forum:~/nodebb# cat /etc/nginx/conf.d/nodebb.conf

# redirects http requests to https
server {
listen 80;
server_name forum.mydomaine.com;
return 302 https://$server_name$request_uri;
}

# the https server
server {
# listen on ssl, deliver with speedy if possible
listen 443 ssl spdy;
server_name forum.mydomaine.com;
# change these paths!
ssl_certificate      /etc/ssl/private/auto.certificat.pem;
ssl_certificate_key  /etc/ssl/private/auto.certificat.pem;

# enables all versions of TLS, but not SSLv2 or 3 which are weak and now deprecated.
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

# disables all weak ciphers
ssl_ciphers 'AES128+EECDH:AES128+EDH';

ssl_prefer_server_ciphers on;

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;
proxy_redirect off;

# Socket.IO Support
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
    }
 }

[yariplus]

What is not working? Are you receiving an error? Are there any errors in the nodebb log file?