On the admin page, under tools/reports, several PHP modules are listed as optional but recommended: apcu, memcache, memcached, redis, and wincache. I have Grav on a Debian server, so I don't think wincache is needed. But are all the other modules really recommended? Aren't they all related to some sort of cache management? Should all of them be installed? I have a lightly-used server with less than 50 blog posts total at the moment. It might grow if I keep blogging but it will be a while.
Also, the report shows mod_rewrite under Apache modules, in green with a green check, but with the text "module required but not enabled". But mod_rewrite is enabled, if I look at the modules under /etc/apache2/mods_enabled.
I just moved this site from a Fedora server, by copying over the full site directory, if that's significant.
Thanks!
-David