Now you might be wondering, that if I didn’t make any changes to my website, then why did the REST API stop working on its own?
There are a number of scenarios that may prevent WordPress from using the REST API. For example, you may not be connected to the internet or have lost connectivity.
Other reasons may be a little more complicated. For instance, you may have accidentally changed the site URL, a WordPress plugin may be causing the issue, or a third-party service may be blocking the API calls.
That being said, let’s take a look at how to troubleshoot and fix the WordPress updating failed error.