( ! ) Warning: Search backend error during near_match search for '18.220.13.15' after 7. 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	233928	{main}( )	../index.php:0
2	0.0123	3375840	MediaWiki->run( )	../index.php:46
3	0.0124	3377248	MediaWiki->main( )	../MediaWiki.php:424
4	0.0205	3551384	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.0356	4378872	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.0361	4432768	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.0361	4433136	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.0787	5794728	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.0838	5800960	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.0838	5801712	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.0859	5816712	Hooks::run( )	../SearchEngine.php:231
12	0.0860	5818312	call_user_func_array ( )	../Hooks.php:209
13	0.0860	5819016	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.0866	5893064	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.0874	5939088	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.0906	6174192	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.0910	6206968	PoolCounterWork->execute( )	../Util.php:133
18	0.0912	6231440	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.0912	6231624	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.0912	6231696	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.0912	6233664	PoolCounterWork->execute( )	../Util.php:129
22	0.0912	6234312	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.0912	6234496	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.0912	6234616	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.0981	6348896	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.0982	6352832	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.0982	6353112	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.0983	6354416	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.0983	6354808	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	233928	{main}( )	../index.php:0
2	0.0123	3375840	MediaWiki->run( )	../index.php:46
3	0.0124	3377248	MediaWiki->main( )	../MediaWiki.php:424
4	0.1002	6278024	OutputPage->output( )	../MediaWiki.php:583
5	0.1004	6284480	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1005	6285776	WebResponse->header( )	../OutputPage.php:2134
7	0.1005	6285920	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	233928	{main}( )	../index.php:0
2	0.0123	3375840	MediaWiki->run( )	../index.php:46
3	0.0124	3377248	MediaWiki->main( )	../MediaWiki.php:424
4	0.1002	6278024	OutputPage->output( )	../MediaWiki.php:583
5	0.1004	6284480	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1011	6293808	WebResponse->header( )	../OutputPage.php:2171
7	0.1011	6293952	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	233928	{main}( )	../index.php:0
2	0.0123	3375840	MediaWiki->run( )	../index.php:46
3	0.0124	3377248	MediaWiki->main( )	../MediaWiki.php:424
4	0.1002	6278024	OutputPage->output( )	../MediaWiki.php:583
5	0.1004	6284480	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1016	6293752	WebResponse->header( )	../OutputPage.php:2172
7	0.1016	6293896	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	233928	{main}( )	../index.php:0
2	0.0123	3375840	MediaWiki->run( )	../index.php:46
3	0.0124	3377248	MediaWiki->main( )	../MediaWiki.php:424
4	0.1002	6278024	OutputPage->output( )	../MediaWiki.php:583
5	0.1021	6293752	WebResponse->header( )	../OutputPage.php:2220
6	0.1021	6293896	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	233928	{main}( )	../index.php:0
2	0.0123	3375840	MediaWiki->run( )	../index.php:46
3	0.0124	3377248	MediaWiki->main( )	../MediaWiki.php:424
4	0.1002	6278024	OutputPage->output( )	../MediaWiki.php:583
5	0.1027	6293912	WebResponse->header( )	../OutputPage.php:2227
6	0.1027	6294056	header ( )	../WebResponse.php:37