I transfer my site from Windows server to Linux server and now i have some problem and miss some data in front-end and back-end. 1- some links in footer is empty and those are removed. 2- in admin panel some options like newsletter, search terms are removed and these space are empty! How can i fix these problems?
Also when i log in to the back-end i saw that the newsletter option in menu is disappear and i haven't newsletter option in menu!!!
I also set permissions to 777 but nothing has changed!!!
How can i fix this problem? Where is the problem? I searched so much about this but i couldn't get any solution for it.