Yoast SEO was updated to version 5.0.1, from version 4.9. Changelogs:

5.0.1

• Fixes a fatal error that could occur when trying to save a post that has <a>-tags with invalid URLs in it.

5.0.0

• Fixes a bug where images via https were not working.
• Fixes a bug where the whip notification can be shown multiple times.
• Introduces a module that counts links in the content.
• Adds Flesch Reading for Italian.
• Changes ‘page title’ to ‘seo title’ in the snippet preview.
• Changes recommended maximum sentence length for Italian from 20 to 25 words, based on more in-depth research.
• Implements the extracted version of the Algolia Search which is now present in yoast-components.
• Adds a banner for the structured data course.
• Introduces a database table to keep track of the linking structure. If the table cannot be created, a notification will be shown.
• When there are posts or pages to reindex, a notice will be shown.