( ! ) Warning: Search backend error during near_match search for '18.220.137.164' after 2. 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	236384	{main}( )	../index.php:0
2	0.0186	3782208	MediaWiki->run( )	../index.php:46
3	0.0187	3783616	MediaWiki->main( )	../MediaWiki.php:424
4	0.0277	3957712	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.0388	4412472	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.0391	4466440	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.0391	4466808	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.0778	5810992	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.0828	5817128	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.0828	5817880	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.0849	5832872	Hooks::run( )	../SearchEngine.php:231
12	0.0850	5834472	call_user_func_array ( )	../Hooks.php:209
13	0.0850	5835176	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.0854	5909232	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.0860	5955256	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.0886	6190304	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.0888	6221888	PoolCounterWork->execute( )	../Util.php:133
18	0.0889	6246144	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.0889	6246328	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.0889	6246400	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.0889	6248336	PoolCounterWork->execute( )	../Util.php:129
22	0.0889	6248984	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.0889	6249168	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.0889	6249288	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.0908	6363552	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.0910	6367488	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.0910	6367768	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.0911	6369072	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.0911	6369464	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	236384	{main}( )	../index.php:0
2	0.0186	3782208	MediaWiki->run( )	../index.php:46
3	0.0187	3783616	MediaWiki->main( )	../MediaWiki.php:424
4	0.0929	6292784	OutputPage->output( )	../MediaWiki.php:583
5	0.0931	6299240	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.0932	6300536	WebResponse->header( )	../OutputPage.php:2134
7	0.0932	6300680	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	236384	{main}( )	../index.php:0
2	0.0186	3782208	MediaWiki->run( )	../index.php:46
3	0.0187	3783616	MediaWiki->main( )	../MediaWiki.php:424
4	0.0929	6292784	OutputPage->output( )	../MediaWiki.php:583
5	0.0931	6299240	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.0938	6308568	WebResponse->header( )	../OutputPage.php:2171
7	0.0938	6308712	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	236384	{main}( )	../index.php:0
2	0.0186	3782208	MediaWiki->run( )	../index.php:46
3	0.0187	3783616	MediaWiki->main( )	../MediaWiki.php:424
4	0.0929	6292784	OutputPage->output( )	../MediaWiki.php:583
5	0.0931	6299240	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.0944	6308512	WebResponse->header( )	../OutputPage.php:2172
7	0.0944	6308656	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	236384	{main}( )	../index.php:0
2	0.0186	3782208	MediaWiki->run( )	../index.php:46
3	0.0187	3783616	MediaWiki->main( )	../MediaWiki.php:424
4	0.0929	6292784	OutputPage->output( )	../MediaWiki.php:583
5	0.0948	6308512	WebResponse->header( )	../OutputPage.php:2220
6	0.0948	6308656	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	236384	{main}( )	../index.php:0
2	0.0186	3782208	MediaWiki->run( )	../index.php:46
3	0.0187	3783616	MediaWiki->main( )	../MediaWiki.php:424
4	0.0929	6292784	OutputPage->output( )	../MediaWiki.php:583
5	0.0954	6308672	WebResponse->header( )	../OutputPage.php:2227
6	0.0954	6308816	header ( )	../WebResponse.php:37