Thread:Extension talk:Wikibase/Issues

I am trying to do a local installation of this extension on a wiki I have set up on my computer and it has been impossible to complete. The version of my mediawiki software is 1.22wmf3, I do have php and MySQL (latest versions) and have followed every step as shown here. the issue is that when I try to update the database after adding the Wikibase.php and ExampleSettings.php  calls to LocalSettings.php, it returns an error:

I'd like a bit of help on how to resolve this. Also, I only want to use the Wikibase extension to manage the item-like pages woth properties and values. I'm not planning to use the interwiki function. How shall I proceed? Thanks.