Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, non-static method download_mod_version::version() cannot be called statically in /var/www/vhosts/integramod.com/httpdocs/forum/dl_mod/classes/class_dl_version.php:53 Stack trace: #0 /var/www/vhosts/integramod.com/httpdocs/forum/downloads.php(952): dl_version::dl_mod_version() #1 {main} thrown in /var/www/vhosts/integramod.com/httpdocs/forum/dl_mod/classes/class_dl_version.php on line 53