It would help if you indicated what you updated? If you are referring to PMS, it sounds like there was an issue with your database. Try the usual of optimizing the database first. If that doesn’t help, try repairing it, https://support.plex.tv/articles/201100678-repair-a-corrupt-database/. Or you can try restoring an old backup if you have that enabled. https://support.plex.tv/articles/202485658-restore-a-database-backed-up-via-scheduled-tasks/