HTTP/1.1 500 Internal Server Error When Accessing Isabel4 (asterisk 16) Portal

 This error is due to the permission, and it is fixed with command chown as below snapshots:

Error in /var/log/httpd/ssl_errror_log:

PHP Fatal error:  Uncaught  --> Smarty: unable to create directory /var/www/html/var/templates_c

#cd /var/www/html

#chown -R asterisk:asterisk var

#systemctl restart httpd