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See https://secure.wikimedia.org/wikipedia/en/wiki/User:/xxx . This is a userspace page with an invalid title, but WikiLove still tries to call Title::getTalkPage(), producing a fatal error.

I think this can be fixed by adding

if ( $baseTitle === null) {
    return null;
}

around line 179 of http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/WikiLove/WikiLove.hooks.php?view=markup .

Nice find. Fixed in r99374.

*** Bug 31866 has been marked as a duplicate of this bug. ***