( ! ) Warning: Search backend error during near_match search for '52.15.219.15' after 16. 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	233960	{main}( )	../index.php:0
2	0.0955	3376416	MediaWiki->run( )	../index.php:46
3	0.1147	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	0.3036	3551992	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.6604	4379496	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.6608	4433376	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.6609	4433744	SpecialSearch->execute( )	../SpecialPage.php:383
8	1.3232	5795832	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	1.3541	5802088	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	1.3541	5802840	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	1.3737	5817840	Hooks::run( )	../SearchEngine.php:231
12	1.3738	5819440	call_user_func_array ( )	../Hooks.php:209
13	1.3738	5820144	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	1.3743	5894168	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	1.3749	5940216	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	1.4054	6175224	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	1.4057	6206832	PoolCounterWork->execute( )	../Util.php:133
18	1.4058	6231088	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	1.4058	6231272	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	1.4058	6231344	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	1.4058	6233280	PoolCounterWork->execute( )	../Util.php:129
22	1.4058	6233928	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	1.4058	6234112	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	1.4058	6234232	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	1.4221	6348496	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	1.4227	6352432	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	1.4227	6352712	MWDebug::warning( )	../GlobalFunctions.php:1247
28	1.4228	6354016	MWDebug::sendMessage( )	../MWDebug.php:155
29	1.4228	6354408	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	233960	{main}( )	../index.php:0
2	0.0955	3376416	MediaWiki->run( )	../index.php:46
3	0.1147	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	1.4268	6277728	OutputPage->output( )	../MediaWiki.php:583
5	1.4270	6284184	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	1.4271	6285480	WebResponse->header( )	../OutputPage.php:2134
7	1.4271	6285624	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	233960	{main}( )	../index.php:0
2	0.0955	3376416	MediaWiki->run( )	../index.php:46
3	0.1147	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	1.4268	6277728	OutputPage->output( )	../MediaWiki.php:583
5	1.4270	6284184	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	1.4277	6293512	WebResponse->header( )	../OutputPage.php:2171
7	1.4277	6293656	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	233960	{main}( )	../index.php:0
2	0.0955	3376416	MediaWiki->run( )	../index.php:46
3	0.1147	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	1.4268	6277728	OutputPage->output( )	../MediaWiki.php:583
5	1.4270	6284184	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	1.4281	6293456	WebResponse->header( )	../OutputPage.php:2172
7	1.4281	6293600	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	233960	{main}( )	../index.php:0
2	0.0955	3376416	MediaWiki->run( )	../index.php:46
3	0.1147	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	1.4268	6277728	OutputPage->output( )	../MediaWiki.php:583
5	1.4286	6293456	WebResponse->header( )	../OutputPage.php:2220
6	1.4286	6293600	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	233960	{main}( )	../index.php:0
2	0.0955	3376416	MediaWiki->run( )	../index.php:46
3	0.1147	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	1.4268	6277728	OutputPage->output( )	../MediaWiki.php:583
5	1.4905	6293616	WebResponse->header( )	../OutputPage.php:2227
6	1.4905	6293760	header ( )	../WebResponse.php:37