Duggler stiman
Please look at the older threads on this issue. You could have URLs being blocked due to characters in the URL, you could have an error somewhere, etc. Please look at your logs (general server logs, webserver error logs, PHP error logs, MySQL/MariaDB error logs, osTicket System Logs, Browser Console logs, etc.) for any related errors. Without logs it'll be near impossible to debug.
Cheers.
