hefollo I would need FTP access to diagnose this issue properly, as I can't even run ?tests, and it can't be reproduced on our own servers (with PHP 8) and it's not reported by anyone else. You can try to fix it like this. Open index.php and change function name exif to get_exif:
line 1218
$exif = Exif::get_exif($this->path);
line 1766
public static function get_exif($path){
line 1775
$exif = self::get_exif($path);