( ! ) Warning: Search backend error during near_match search for '3.15.220.16' after 18. 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	0.0000	233896	{main}( )	../index.php:0
2	0.0375	3376040	MediaWiki->run( )	../index.php:46
3	0.0375	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	0.0957	3551696	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.3455	4379424	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.3459	4433360	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.3460	4433728	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.9594	5795624	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	1.0303	5801568	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	1.0303	5802320	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	1.0585	5817320	Hooks::run( )	../SearchEngine.php:231
12	1.0586	5818920	call_user_func_array ( )	../Hooks.php:209
13	1.0586	5819624	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	1.0589	5893672	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	1.0592	5939696	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	1.0915	6174800	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	1.0917	6206400	PoolCounterWork->execute( )	../Util.php:133
18	1.0918	6230656	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	1.0918	6230840	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	1.0918	6230912	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	1.0918	6232848	PoolCounterWork->execute( )	../Util.php:129
22	1.0918	6233496	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	1.0918	6233680	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	1.0918	6233800	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	1.1098	6348056	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	1.1100	6351992	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	1.1100	6352272	MWDebug::warning( )	../GlobalFunctions.php:1247
28	1.1101	6353576	MWDebug::sendMessage( )	../MWDebug.php:155
29	1.1101	6353968	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	0.0000	233896	{main}( )	../index.php:0
2	0.0375	3376040	MediaWiki->run( )	../index.php:46
3	0.0375	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	1.1379	6277232	OutputPage->output( )	../MediaWiki.php:583
5	1.1381	6283688	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	1.1382	6284984	WebResponse->header( )	../OutputPage.php:2134
7	1.1382	6285128	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	0.0000	233896	{main}( )	../index.php:0
2	0.0375	3376040	MediaWiki->run( )	../index.php:46
3	0.0375	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	1.1379	6277232	OutputPage->output( )	../MediaWiki.php:583
5	1.1381	6283688	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	1.1389	6293016	WebResponse->header( )	../OutputPage.php:2171
7	1.1389	6293160	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	0.0000	233896	{main}( )	../index.php:0
2	0.0375	3376040	MediaWiki->run( )	../index.php:46
3	0.0375	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	1.1379	6277232	OutputPage->output( )	../MediaWiki.php:583
5	1.1381	6283688	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	1.1394	6292960	WebResponse->header( )	../OutputPage.php:2172
7	1.1394	6293104	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	0.0000	233896	{main}( )	../index.php:0
2	0.0375	3376040	MediaWiki->run( )	../index.php:46
3	0.0375	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	1.1379	6277232	OutputPage->output( )	../MediaWiki.php:583
5	1.1399	6292960	WebResponse->header( )	../OutputPage.php:2220
6	1.1399	6293104	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	0.0000	233896	{main}( )	../index.php:0
2	0.0375	3376040	MediaWiki->run( )	../index.php:46
3	0.0375	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	1.1379	6277232	OutputPage->output( )	../MediaWiki.php:583
5	1.1406	6293112	WebResponse->header( )	../OutputPage.php:2227
6	1.1406	6293256	header ( )	../WebResponse.php:37