[Engineering] Wikimedia-log-errors summary - 2017-12-01

[Timo Tijhof]

Been a while since the last summary, so here is one.

* 168 reported unresolved issues
* 160 issues without an assignee
* 10 issues tagged with "Patch-For-Review"

Please check out the breakdown of open issues by project to see which
errors in your field welcome fixing:
<https://phabricator.wikimedia.org/maniphest/query/OunXBb3QsLmc/#R>

Or get the latest straight from Logstash:
<https://logstash.wikimedia.org/app/kibana#/dashboard/mediawiki-errors>

Top 5 by hit count in last 24 hours:

1. ERROR channel=PageViewInfo "Failed fetching {url}: {error}"

   #PageViewInfo
   https://phabricator.wikimedia.org/T181011

2. ERROR channel=error "Fatal error: Call to exists() on a non-object"

   #ProofreadPage
   https://phabricator.wikimedia.org/T181868

3. WARNING channel=XMP "XMPReader::parse .. "

   #Multimedia #MediaWiki-File-management
   https://phabricator.wikimedia.org/T118799

4. WARNING channel=session "Metadata merge failed: {exception}"

   #MediaWiki-Authentication #CentralAuth
   https://phabricator.wikimedia.org/T158365

5. WARNING channel=session "Metadata has an anonymous user, but a non-anon"

   #MediaWiki-Authentication #CentralAuth
   https://phabricator.wikimedia.org/T181869

-- Timo
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