I was going through my plugins and ACF Pro said it needed to be updated. But when I called up the New Version 5.9.3 details, it had a warning at the top:
Warning: This plugin has not been tested with your current version of WordPress.
…and also said it’s compatible up to WP 5.5.1 (we’re on 5.5.2 now, no way to change either).
Please keep your plugins up to date/compatible with the latest WP version.
