That was it. We were running 5.3; upgraded to 5.6 and everything is now appearing normally.

Thank you, Rikard, John, and Mike. All of the help is truly and greatly appreciated.

I cannot access the WP dashboard, so I had to do that by renaming the plugin folders; hopefully that will suffice. There are no plugins active; the error referencing an error in an Enfold file persists.

Fatal error: Declaration of avia_sc_comments_list::shortcode_handler() must be compatible with that of aviaShortcodeTemplate::shortcode_handler() in /home/content/34/9013334/html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/comments.php on line 14