I have Moodle version 3.6.3+ installed on a server with XAMPP and php version 7.3.3 with database 10.1.38-MariaDB. The point is that since the last updates have been appearing messages I CANNOT ACCESS THIS SITE . THE CONNECTION HAS BEEN REESTABLISHED, it appears to me in the moodle installation, when I am going to identify myself and when I update it. In fact, when updating, it does not go beyond the first screen. If I try to install a new moodle, the same problem will appear when I go from the first screen: YOU CANNOT ACCESS THIS SITE. THE CONNECTION HAS BEEN RE-ESTABLISHED.
I have several installations with WORDPRESS and they work great.
Could someone with more experience tell me how to solve this problem?