Topic on Project:Support desk

The mediawiki program seems to be broken for the synology device. When I try to access the page I get

Exception encountered, of type "InvalidArgumentException"

or

"Notice: Object of class Closure could not be converted to int in /volume1/web/MediaWiki/includes/libs/objectcache/WANObjectCache.php on line 801 Exception encountered, of type "InvalidArgumentException""

which has a little more information, but not enough for me to get it working again.

Which MediaWiki version is this about? To get a stacktrace for the exception, see Manual:How to debug

Mediawiki version 1.27.1-0117.

DSM 6.0.2-8451 Update 9

DSM date 2017/01/16.

Note to myself: It seems that "Synology" and "DSM" are these things: https://www.synology.com/en-us/dsm/6.0

I have installed mediawiki thru the synology package center.