Dear:When I uploaded a pdf file to the system when opening it,it shows:Unknown or invalid file.
#qU0jpLhW6l0jmvr8hIRAluYpH3AUr86I52df91e7db060df7c5b3b8286c450eb8
This might be related to: https://github.com/osTicket/osTicket-1.8/issues/913But since you didn't tell us any information about your setup I cannot be sure.Please review the link above and while your at it you may want to read this thread: Please read before requesting assistance. Thank you.
