Hi Dan,
Not sure how to solve the database issue. It says:
Table '...#__banner_clients' doesn't exist SQL=ALTER TABLE `#__banner_clients` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Table '...#__banner_tracks' doesn't exist SQL=ALTER TABLE `#__banner_tracks` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Table '...#__banner_clients' doesn't exist SQL=ALTER TABLE `#__banner_clients` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Table '...#__banner_tracks' doesn't exist SQL=ALTER TABLE `#__banner_tracks` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Table '...#__banner_clients' doesn't exist SQL=ALTER TABLE `#__banner_clients` ADD KEY `idx_metakey_prefix` (`metakey_prefix`(100));
The Joomla! Core database tables have not been converted yet to UTF-8 Multibyte (utf8mb4).
I ran the Fix a few times, it did not solve it. This issue is also in the live site. I presume it is unrelated to Gantry, etc.