The legacy selfcheck interface is no longer included in Evergreen as of this release.
This interface was formerly located at a URL ending in extras/selfcheck/selfcheck.xml
No attempt is made at upgrade time to automatically remove this interface.
It is recommended that you remove this interface and its associated configuration after performing an upgrade:
(paths relative to Evergreen web root)
You can also remove the related Apache configuration block starting with:
<LocationMatch .*/selfcheck.xml>