I guess this is due to PHP version. It does not work on 5.2 and 5.3. It
works well on PHP 5.4+
Should we change it like this (I don't have PHP <5.6)?
$release = (object) array( 'title' => (string)$title, 'content' => (string)$content, 'version' => (string)$lastVersion, 'uri' => $baseURI . (string)$releaseURI->href );
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