Hey Guys, I encountered the same problem with my site..Fortunately, my dashboard was still accessible despite the Critical Error Message in the front end. I found a solution though. Just install the plugin WP Rollback, activate, and rollback your Yoast Plugin to the Previous version which happens to be 13.5. The site gets back to normal and you continue using Yoast plugin normally…I guess you should also not update Yoast until the next version past 14.0
