Due to index size restrictions in MySQL, this does mean we need to re-create a handful of indexes to fit within MySQL’s rules. Using a standard configuration, MySQL allows 767 bytes per index, which for utf8 means 767 bytes / 3 bytes = 255 characters. For utf8mb4, that means 767 bytes / 4 bytes = 191 characters.
im creating a converter now, i will no longer wait for invision, should be done next days.