Hi, On 10/31/2016 03:47 AM, Jonathan Dowland wrote: > After doing so, our wiki says the following > >> MediaWiki requires the PSR-3 logging library to be present. This library is >> not embedded directly in MediaWiki's git repository and must be installed >> separately by the end user. Please see mediawiki.org for help on installing >> the required components. > > There is no mention of this PSR-3 library in UPGRADING.gz and no obvious match > for it when searching the Debian package archives.
That library is bundled with the MediaWiki package, so there shouldn't be any manual work required. It would seem that somehow the /usr/share/mediawiki/vendor/psr/log/ directory is missing on your system - could you check if that directory exists? Also the output of `php -i` might be helpful in debugging. -- Kunal
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