No route found for "POST /login" (from "http://xx.net/authentication/signin")

I'm having trouble deploying my web application on a server. I have created an API in Symfony using various components and a client in Angular with npm. It works perfectly fine on my local machine, but when I try to run it on the server using Apache, I run into an issue. When I try to log in, I get this error:

No route found for "POST /login" (from "http://xx.net/authentication/signin")

This is called from the client. When I access xx.net/api, the Symfony page displays without errors, so that seems to be working fine. However, there’s likely an issue with the proxy, which I can't figure out how to resolve. Can someone please help?

Here’s my Apache configuration:

server@xx:~$ cat /etc/apache2/sites-enabled/xx.net.conf <VirtualHost *:80>

ServerAdmin xx@gmail.com
ServerName xxnet
DocumentRoot /var/www/xx.net

# Přesměrování požadavků na /api do /var/www/xx.net-api
Alias /api /var/www/xx.net-api/public

# Nastavení oprávnění pro přístup k souborům API
<Directory /var/www/xx.net-api>
Options Indexes FollowSymLinks MultiViews
AllowOverride All
#SetHandler "proxy:fcgi://127.0.0.1:9000"
SetHandler "proxy:unix:/run/php/php7.4-fpm.sock|fcgi://localhost"
#SetHandler "proxy:fcgi:///run/php/php7.4-fpm.sock"
Require all granted
</Directory>

<Directory />
Options FollowSymLinks
AllowOverride All
</Directory>

<Directory /var/www/xx.net>
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Require all granted
</Directory>

ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
<Directory "/usr/lib/cgi-bin">
AllowOverride None
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all
</Directory>

ErrorLog ${APACHE_LOG_DIR}/xx-error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access_xx.log combined


server@xx:/var/www/xx.net-api$ sudo -su www-data php bin/console debug:router api_user_login
+--------------+-------------------------------------------------------------+
| Property | Value |
+--------------+-------------------------------------------------------------+
| Route Name | api_user_login |
| Path | /api/login |
| Path Regex | #^/api/login$#sD |
| Host | ANY |
| Host Regex | |
| Scheme | ANY |
| Method | POST |
| Requirements | NO CUSTOM |
| Class | Symfony\Component\Routing\Route |
| Defaults | _controller: App\Controller\Api\UserController::loginAction |
| Options | compiler_class: Symfony\Component\Routing\RouteCompiler |
+--------------+-------------------------------------------------------------+

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