Hi, I found a fix, but would be helpfull your opinion about it.
I found the issue to be in src/admin/views/templates/list-templates.php line 46
I was getting a PHP Fatal error: Path cannot be empty, so I commented those lines that had the $tmpdata and now is working. I think the issue is with PHP 8. Was preventing to display all the templates in the admin.
if(!is_array($template)){
//$tmpdata = file_get_contents($template);
$regx = "/WPDM.*Template[\s]*:([^\-\->]+)/";
//if (preg_match($regx, $tmpdata, $matches)) {
if (preg_match($regx, $matches)) {
$name = $matches[1];
} else continue;
} else {
$name = $template['name'];
$ctemplates[] = $ctpl;
}