I was trying to export some events, and the browser would show that it was stuck on "Exporting...."
Looking at the logs didn't tell me much, so I searched these forums.
That led me looking for the zm.conf - I opened the zm.conf with nano, found the location of M_PATH_WEB, and browsed to M_PATH_WEB/temp.
I found that M_PATH_WEB/temp was symlinked to a storage drive, so I inspected the folder that contained it.
I changed the ownership apache:apache , and chmod to 777.
Export now works!