There are [[ https://logstash.wikimedia.org/app/kibana#/dashboard/Reading-Web?_g=(refreshInterval:(display:Off,pause:!f,value:0),time:(from:now-7d,mode:quick,to:now))&_a=(description:'remove%20CirrusSearch',filters:!(('$state':(store:appState),meta:(alias:!n,disabled:!f,index:'logstash-*',key:normalized_message.raw,negate:!t,type:phrase,value:'%7B%22@timestamp%22:%222017-09-30T06:26:10.000000%2B00:00%22,%22@version%22:1,%22host%22:%22mw1161%22,%22message%22:%22%5B1fd1dd6fc395092b90a3db56%5D%20%5Bno%20req%5D%20%20%20ErrorException%20from%20line%201656%20of%20%2Fsrv%2Fmediawiki%2Fphp-1.31.0-wmf.1%2Fincludes%2FLinker.php:%20PHP%20Warning:%20Empty%20regular%20expression%22,%22ty'),query:(match:(normalized_message.raw:(query:'%7B%22@timestamp%22:%222017-09-30T06:26:10.000000%2B00:00%22,%22@version%22:1,%22host%22:%22mw1161%22,%22message%22:%22%5B1fd1dd6fc395092b90a3db56%5D%20%5Bno%20req%5D%20%20%20ErrorException%20from%20line%201656%20of%20%2Fsrv%2Fmediawiki%2Fphp-1.31.0-wmf.1%2Fincludes%2FLinker.php:%20PHP%20Warning:%20Empty%20regular%20expression%22,%22ty',type:phrase))))),options:(darkTheme:!f),panels:!((col:1,id:All-Events,panelIndex:1,row:1,size_x:6,size_y:2,type:visualization),(col:7,id:Top-20-Hosts,panelIndex:4,row:1,size_x:3,size_y:2,type:visualization),(col:10,id:MediaWiki-Versions,panelIndex:5,row:1,size_x:3,size_y:2,type:visualization),(col:1,id:'Trending-Messages-(Reduced-noice)',panelIndex:6,row:3,size_x:12,size_y:6,type:visualization),(col:1,columns:!(type,level,wiki,host,message),id:Default-Events-List,panelIndex:7,row:9,size_x:12,size_y:5,sort:!('@timestamp',desc),type:search)),query:(query_string:(analyze_wildcard:!t,query:'(message:MinervaNeue%20OR%20message:MobileFrontend%20OR%20message:Popups%20OR%20message:TextExtracts%20OR%20message:PageImages%20OR%20message:RelatedArticles%20OR%20message:QuickSurveys%20OR%20message:WikidataPageBanner)%20AND%20NOT%20type:scap%20AND%20NOT%20type:log4j%20AND%20NOT%20level:%22INFO%22%20AND%20NOT%20level:DEBUG%20AND%20NOT%20host:mwdebug1002%20AND%20NOT%20host:mwdebug1001%20AND%20NOT%20message:%22Memcached%20error%20for%20key%22%20AND%20NOT%20message:%22SlowTimer%22%20AND%20NOT%20message:%22entire%20web%20request%20took%20longer%20than%2060%20seconds%22%20AND%20NOT%20message:%22User-%3EsaveSettings()%22%20%20AND%20NOT%20message:%22AuthManager::autoCreateUser%22%20%20AND%20NOT%20message:%22CSP%20report%22%20AND%20NOT%20message:%22LoadBalancer%22%20AND%20NOT%20message:%22TransactionProfiler%22%20AND%20NOT%20exception.trace:%22CirrusSearch%22%20AND%20NOT%20host:%22cobalt%22%20AND%20NOT%20message:%22File%20name%20too%20long%22%20AND%20NOT%20message:%22Elastica%22%20AND%20NOT%20message:%22RedisException%22%20AND%20NOT%20host:%22phab1001%22')),timeRestore:!t,title:'Reading%20Web',uiState:(P-1:(spy:(mode:(fill:!f,name:!n))),P-4:(vis:(params:(sort:(columnIndex:!n,direction:!n)))),P-6:(spy:(mode:(fill:!f,name:!n)),vis:(params:(sort:(columnIndex:!n,direction:!n))))),viewMode:edit) | 278 BadMethodCallExceptions reported in our Logstash ]]. They take the following form:
```name=Example
t exception.class BadMethodCallException
t exception.code 0
t exception.file /srv/mediawiki/php-1.34.0-wmf.1/includes/filerepo/file/LocalFile.php:890
t exception.message Call to a member function getName() on a non-object (null)
t exception.trace #0 /srv/mediawiki/php-1.34.0-wmf.1/includes/api/ApiQueryImageInfo.php(416): LocalFile->getUser()
#1 /srv/mediawiki/php-1.34.0-wmf.1/includes/api/ApiQueryImageInfo.php(183): ApiQueryImageInfo::getInfo(LocalFile, array, ApiResult, NULL, array)
#2 /srv/mediawiki/php-1.34.0-wmf.1/includes/api/ApiQuery.php(249): ApiQueryImageInfo->execute()
#3 /srv/mediawiki/php-1.34.0-wmf.1/includes/api/ApiMain.php(1593): ApiQuery->execute()
#4 /srv/mediawiki/php-1.34.0-wmf.1/includes/api/ApiMain.php(531): ApiMain->executeAction()
#5 /srv/mediawiki/php-1.34.0-wmf.1/includes/api/ApiMain.php(502): ApiMain->executeActionWithErrorHandling()
#6 /srv/mediawiki/php-1.34.0-wmf.1/api.php(87): ApiMain->execute()
#7 /srv/mediawiki/w/api.php(3): include(string)
#8 {main}
t exception_id XL8QbgpAIDsAACePKCgAAACV
t exception_url /w/api.php?action=query&format=json&prop=imageinfo|pageimages&piprop=name|thumbnail&iiprop=timestamp|user|url|userid|canonicaltitle|size|dimensions|mime|thumbmime|extmetadata|archivename|uploadwarning|badfile&titles=Image:%E4%B8%AD%E5%9B%BD&pilicense=free&pithumbsize=600
t message [XL8QbgpAIDsAACePKCgAAACV] /w/api.php?action=query&format=json&prop=imageinfo|pageimages&piprop=name|thumbnail&iiprop=timestamp|user|url|userid|canonicaltitle|size|dimensions|mime|thumbmime|extmetadata|archivename|uploadwarning|badfile&titles=Image:%E4%B8%AD%E5%9B%BD&pilicense=free&pithumbsize=600 BadMethodCallException from line 890 of /srv/mediawiki/php-1.34.0-wmf.1/includes/filerepo/file/LocalFile.php: Call to a member function getName() on a non-object (null)
```
The source appears to be incoherent `$type` and `$user` state in [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/b8ec4a8ff8fe917fd69ecfa6d2a07e031848e197/includes/filerepo/file/LocalFile.php | LocalFile.php ]]:
```lang=php,name=LocalFile.php:890
/**
* Returns user who uploaded the file
*
* @param string $type 'text', 'id', or 'object'
* @return int|string|User
* @since 1.31 Added 'object'
*/
function getUser( $type = 'text' ) {
$this->load();
if ( $type === 'object' ) {
return $this->user;
} elseif ( $type === 'text' ) {
return $this->user->getName();
} elseif ( $type === 'id' ) {
return $this->user->getId();
}
throw new MWException( "Unknown type '$type'." );
}
```