I will note that you have a plugin behaving poorly.
mdp-local-business-seo has some baddly formed SQL calls, which results in
this error on your backend: WordPress database error Multiple primary key
defined for query ALTER TABLE wp_78ybd3_mdp_reviews ADD PRIMARY KEY id
(id), do_action('admin_init'), call_user_func_array,
That means the plugin is trying to create the DB tables every single time
the site is visited. I would reach out to that developer and inform them.