Thread:Project:Support desk/Bundled extensions BreadCrumbs and InterWiki not working./reply

I have not checked your errors in detail, but when you say you got them directly after your upgrade to 1.22.3, then they are most likely caused by this: The releases from last week contain the wrong extensions. The version, which is included is not the one from the according branches, but it is some snapshot from the master branch. This breaks systems. Until this gets fixed (probably by the end of this month) you can use the extensions, which come with MediaWiki 1.22.2 instead.