Yoast SEO 19.7 Causes Fatal Error & Crashes Websites:

Yoast SEO releases an update to fix fatal errors caused by a plugin conflict.Yoast investigated the reports and swiftly published a new update that fixed the problem.

WordPress Fatal Error:

WordPress Fatal Error was caused by an update to Yoast SEO in which the coding conflicted with another plugin.

What is the problem of yoast 19.7 exactly?

This occured beacause two plugins are trying to do something but one is essentially cancelling out the other or otherwise preventing each other from functioning.

what happened with the Yoast 19.7 update?

Yoast 19.7 had a conflict with other plugins (or custom coding) that change the admin login URL.
Changing the login URL is a security measure to guess the login password credentials.

Yoast Announces Update Bug

We’ve identified the problem and are working on a solution.”

Why Do Fatal Errors Happen With Plugins?

Plugin conflicts are not exclusive to Yoast. It’s simply more noticeable when it happens to Yoast because their user base numbers in the millions.

“This is the sort of #WordPress plugin conflict situation that I literally don’t know how to prevent from happening.

Solution Offered Within Hours

Yoast published a new update within two hours of announcing that they identified a bug in the update and were working on a solution.

Conclusion:

Users of Yoast SEO plugin may want to consider updating to the very latest version of Yoast, version 19.7.1.Issue with Yoast SEO 19.7.

Yoast SEO plugin for WordPress is causing a conflict on websites that are running plugins or custom code that alters the WordPress login page.

Solution Offered Within Hours

We've resolved the problem and released a patch. You can now safely update to Yoast SEO 19.7.1.

We've marked the incident report at https://t.co/sBvJewCAeX as resolved.

— Yoast (@yoast) September 20, 2022

We’ve identified the problem and are working on a solution.”

Why Do Fatal Errors Happen With Plugins?

Plugin conflicts are not exclusive to Yoast. It’s simply more noticeable when it happens to Yoast because their user base numbers in the millions.

“This is the sort of #WordPress plugin conflict situation that I literally don’t know how to prevent from happening.

Yoast published a new update within two hours of announcing that they identified a bug in the update and were working on a solution.

Resolved
Version 19.7.1 of the Yoast SEO plugin for WordPress has been released with the fix for this issue.