I just installed patch 3, by downloading the zip file, unpacking it in my download folder, opening the folder it created (5-0-0-patch-3), and copying the five objects in it into my htdocs/openemr folder (specifying that the new files replace the old files.
I then turned on XAMPP, started the servers, and pointed a web browser to localhost/openemr/sql_patch.php. This produces a blank page, with no evidence of activity.
When I attempt to log back into open emr via my login link (http://localhost/openemr/interface/login/login.php?site=default), or via the address localhost/openemr I get this message:
Object not found!
The requested URL was not found on this server. If you entered the URL manually please check your spelling and try again.
If you think this is a server error, please contact the webmaster.
Apache/2.4.25 (Unix) OpenSSL/1.0.2j PHP/5.6.30 mod_perl/2.0.8-dev Perl/v5.16.3
If I log into localhost I'm taken to the XAMPP welcome page, so the XAMPP Apache server is still running.
What to do next?