403 Access Forbidden by CSRFProtector! #323

I did install & configure OpenDocMan V. 1.4.4 in a sub folder in Centos 7 (Linux) remote server. Then I changed the favicon.ico & logo.gif images of the application. The new logo is displayed successfully, but the new favicon is not displayed.

Now the main issue is when I try to login to the application as the admin user, I receive the following error,

403 Access Forbidden by CSRFProtector!

The server details are:

Web Server: Apache/2.4.6 (CentOS)
PHP Version: 5.6
Database Server version: 5.5.68-MariaDB - MariaDB Server


I have given write permission to apache to the relevant document directories.
Please help me to resolve this issue,

I have the same problem with a brand new installation of version 1.4.4 on a Windows machine with Apache, PHP 7.4 and MySQL 8, when I try to login by just going to https://www.example.com/opendocman it shows me that error, but if I login going to https://www.example.com/opendocman/out.php it does let me in, what seems to be the problem?