Thanks for that link, I tried the fix provided in the link above by adding this to php.ini with no luck:
extension=apcu.so
extension=apc.so
apc.enabled=1
apc.shm_size=256M
apc.ttl=7200
apc.enable_cli=1
apc.gc_ttl=3600
apc.entries_hint=4096
apc.slam_defense=1
apc.serializer=php
I also tried putting this in apcu.ini as well, and that did not work After adding those files I did a sudo service apache2 restart as well as a reboot of the Raspberry pi.
I’m going to try and keep working on the PHP warning error, and see what I can find. If anyone has further suggestions, thank you in advance.
Update: It looks like APCu is not compatible with php 7.0. I thought I was running php 5.x but I wasn’t. NextCloud tells me I’m using Php 5.6.22. This is confusing me! Will I have luck with memcached or redis? Can I use Zend Opcache for data caching?