core update crashes
Installation and Configuration
The other one to watch out for is "SymLinksIfOwnerMatch" - if you have that enabled, then it means symlinks are followed only if the destination is owned by the same user that owners the symlink. This means if you are running Apache has the "httpd" or "www" user, and you upload the files as root (or another user) and you do NOT chown them to www/httpd, then symlinks are not followed:
https://httpd.apache.org/docs/2.4/sections.html