I have re-installed OSticket and database, and its finally working.
How do I install theme? Whenever I do what is told in the install guide, I get error 500..
Guide:
Steps to install:
1) Download and copy the files and folder to the root osticket folder. it will replace some exsisting files.
2) [optional] Enable knowledge base (admin panel -> setting --> knowledge base --> enable knowledge base)
3) [optional] add faqs (agent panel --> knowledge --> add category and faqs)
https://www.osticketresponsivetheme.com/osticket-theme-ostone