[[ https://logstash.wikimedia.org/app/kibana#/dashboard/Fatal-Monitor?_g=(refreshInterval:(display:Off,pause:!f,value:0),time:(from:now-1h,mode:quick,to:now))&_a=(filters:!(('$state':(store:appState),bool:(must:!((terms:(level:!(NOTICE,INFO,WARNING))),(term:(type:mediawiki)))),meta:(alias:!n,disabled:!f,index:'logstash-*',key:bool,negate:!t,value:'%7B%22must%22:%5B%7B%22terms%22:%7B%22level%22:%5B%22NOTICE%22,%22INFO%22,%22WARNING%22%5D%7D%7D,%7B%22term%22:%7B%22type%22:%22mediawiki%22%7D%7D%5D%7D'))),options:(darkTheme:!f),panels:!((col:1,id:Top-20-Hosts,panelIndex:2,row:3,size_x:9,size_y:2,type:visualization),(col:1,columns:!(type,level,wiki,host,message),id:Default-Events-List,panelIndex:3,row:10,size_x:12,size_y:23,sort:!('@timestamp',desc),type:search),(col:1,id:Fatal-Events-Over-Time,panelIndex:4,row:1,size_x:12,size_y:2,type:visualization),(col:1,id:Trending-Messages,panelIndex:5,row:5,size_x:12,size_y:5,type:visualization),(col:10,id:MediaWiki-Versions,panelIndex:6,row:3,size_x:3,size_y:2,type:visualization)),query:(query_string:(analyze_wildcard:!t,query:'(type:mediawiki%20AND%20(channel:exception%20OR%20channel:wfLogDBError))%20OR%20type:hhvm%20AND%20message:MobileFrontend')),title:'Fatal%20Monitor',uiState:(P-2:(spy:(mode:(fill:!f,name:!n)),vis:(legendOpen:!f)),P-4:(spy:(mode:(fill:!f,name:!n)),vis:(colors:(exception:%23C15C17,hhvm:%23BF1B00))),P-6:(spy:(mode:(fill:!f,name:!n)),vis:(legendOpen:!t)))) | logstash ]] is complaining:
```
Warning: Invalid State Error in /srv/mediawiki/php-1.29.0-wmf.3/extensions/MobileFrontend/includes/MobileFormatter.php on line 667
Warning: Invalid State Error in /srv/mediawiki/php-1.29.0-wmf.3/extensions/MobileFrontend/includes/MobileFormatter.php on line 673
```
This seems to relate to code in MobileFormatter::makeHeadingsEditable