This would cause only the index page to not work for signed in members.

Those php modules are there.

root@ns1:/home/michael# sudo apt-get install php7.0-zip

Reading package lists... Done

Building dependency tree

Reading state information... Done

php7.0-zip is already the newest version (7.0.33-8+ubuntu16.04.1+deb.sury.org+1).

0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.

root@ns1:/home/michael# sudo apt-get install php7.0-gd

Reading package lists... Done

Building dependency tree

Reading state information... Done

php7.0-gd is already the newest version (7.0.33-8+ubuntu16.04.1+deb.sury.org+1).

0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.

Thanks for the input.