( ! ) Warning: Search backend error during near_match search for '18.217.2.54' after 15. Couldn't connect to host, Elasticsearch down? [Called from CirrusSearch\ElasticsearchIntermediary::failure in /var/www/w122_5/extensions/CirrusSearch/includes/ElasticsearchIntermediary.php at line 98] in /var/www/w122_5/includes/debug/MWDebug.php on line 300
Call Stack
#	Time	Memory	Function	Location
1	0.0001	233896	{main}( )	../index.php:0
2	0.1469	3375816	MediaWiki->run( )	../index.php:46
3	0.1469	3377224	MediaWiki->main( )	../MediaWiki.php:424
4	0.2522	3551288	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.3957	4378816	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.3962	4432704	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.3962	4433072	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.7073	5794832	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.7478	5801064	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.7478	5801816	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.7590	5816816	Hooks::run( )	../SearchEngine.php:231
12	0.7591	5818416	call_user_func_array ( )	../Hooks.php:209
13	0.7591	5819120	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.7596	5893152	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.7603	5939176	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.7750	6174232	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.7754	6205816	PoolCounterWork->execute( )	../Util.php:133
18	0.7755	6230072	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.7755	6230256	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.7755	6230328	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.7756	6232264	PoolCounterWork->execute( )	../Util.php:129
22	0.7756	6232912	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.7756	6233096	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.7756	6233216	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.7906	6347464	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.7908	6351400	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.7908	6351680	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.7909	6352984	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.7909	6353376	trigger_error ( )	../MWDebug.php:300

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/w122_5/includes/debug/MWDebug.php:300) in /var/www/w122_5/includes/WebResponse.php on line 37
Call Stack
#	Time	Memory	Function	Location
1	0.0001	233896	{main}( )	../index.php:0
2	0.1469	3375816	MediaWiki->run( )	../index.php:46
3	0.1469	3377224	MediaWiki->main( )	../MediaWiki.php:424
4	0.7928	6276688	OutputPage->output( )	../MediaWiki.php:583
5	0.7930	6283144	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.7931	6284440	WebResponse->header( )	../OutputPage.php:2134
7	0.7931	6284584	header ( )	../WebResponse.php:37

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/w122_5/includes/debug/MWDebug.php:300) in /var/www/w122_5/includes/WebResponse.php on line 37
Call Stack
#	Time	Memory	Function	Location
1	0.0001	233896	{main}( )	../index.php:0
2	0.1469	3375816	MediaWiki->run( )	../index.php:46
3	0.1469	3377224	MediaWiki->main( )	../MediaWiki.php:424
4	0.7928	6276688	OutputPage->output( )	../MediaWiki.php:583
5	0.7930	6283144	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.7938	6292472	WebResponse->header( )	../OutputPage.php:2171
7	0.7938	6292616	header ( )	../WebResponse.php:37

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/w122_5/includes/debug/MWDebug.php:300) in /var/www/w122_5/includes/WebResponse.php on line 37
Call Stack
#	Time	Memory	Function	Location
1	0.0001	233896	{main}( )	../index.php:0
2	0.1469	3375816	MediaWiki->run( )	../index.php:46
3	0.1469	3377224	MediaWiki->main( )	../MediaWiki.php:424
4	0.7928	6276688	OutputPage->output( )	../MediaWiki.php:583
5	0.7930	6283144	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.7942	6292416	WebResponse->header( )	../OutputPage.php:2172
7	0.7942	6292560	header ( )	../WebResponse.php:37

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/w122_5/includes/debug/MWDebug.php:300) in /var/www/w122_5/includes/WebResponse.php on line 37
Call Stack
#	Time	Memory	Function	Location
1	0.0001	233896	{main}( )	../index.php:0
2	0.1469	3375816	MediaWiki->run( )	../index.php:46
3	0.1469	3377224	MediaWiki->main( )	../MediaWiki.php:424
4	0.7928	6276688	OutputPage->output( )	../MediaWiki.php:583
5	0.8070	6292416	WebResponse->header( )	../OutputPage.php:2220
6	0.8070	6292560	header ( )	../WebResponse.php:37

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/w122_5/includes/debug/MWDebug.php:300) in /var/www/w122_5/includes/WebResponse.php on line 37
Call Stack
#	Time	Memory	Function	Location
1	0.0001	233896	{main}( )	../index.php:0
2	0.1469	3375816	MediaWiki->run( )	../index.php:46
3	0.1469	3377224	MediaWiki->main( )	../MediaWiki.php:424
4	0.7928	6276688	OutputPage->output( )	../MediaWiki.php:583
5	0.8076	6292568	WebResponse->header( )	../OutputPage.php:2227
6	0.8076	6292712	header ( )	../WebResponse.php:37