Bureaucrats, confirmed, Administrators
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note about fixing thumbnail generation
https://freephile.org/w/images/thumb/archive/5/5f/20160127044917%21Business.card.backside.jpg/120px-Business.card.backside.jpg
== Thumbnailing Errors ==
If you get an error about "Error creating thumbnail: Unable to save thumbnail to destination", and you've checked that the "images" directory is writable by the web server, as well as any sub-directorys, then you might be able to solve the problem by '''unsetting''' the <code>[[mw:Manual:$wgTmpDirectory|$wgTmpDirectory]]</code> setting in your LocalSettings.php file. I had
<code>$wgTmpDirectory = "{$wgUploadDirectory}/tmp";</code> in a v1_26 version of MediaWiki. Thumbnails were generated after I commented the setting.
== Reference ==