( ! ) Warning: Search backend error during near_match search for '18.221.13.173' 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	236384	{main}( )	../index.php:0
2	0.0164	3782296	MediaWiki->run( )	../index.php:46
3	0.0164	3783704	MediaWiki->main( )	../MediaWiki.php:424
4	0.0250	3957840	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.0371	4412632	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.0375	4466624	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.0375	4466992	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.0855	5810856	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.0917	5817072	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.0917	5817824	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.0941	5832824	Hooks::run( )	../SearchEngine.php:231
12	0.0941	5834424	call_user_func_array ( )	../Hooks.php:209
13	0.0941	5835128	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.0946	5909184	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.0954	5955208	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.0986	6190248	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.0989	6223016	PoolCounterWork->execute( )	../Util.php:133
18	0.0991	6247432	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.0991	6247616	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.0991	6247688	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.0991	6249656	PoolCounterWork->execute( )	../Util.php:129
22	0.0991	6250304	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.0991	6250488	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.0991	6250608	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.1057	6364856	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.1059	6368792	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.1059	6369072	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.1060	6370376	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.1060	6370768	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	0.0164	3782296	MediaWiki->run( )	../index.php:46
3	0.0164	3783704	MediaWiki->main( )	../MediaWiki.php:424
4	0.1078	6294016	OutputPage->output( )	../MediaWiki.php:583
5	0.1080	6300472	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1081	6301768	WebResponse->header( )	../OutputPage.php:2134
7	0.1081	6301912	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	0.0164	3782296	MediaWiki->run( )	../index.php:46
3	0.0164	3783704	MediaWiki->main( )	../MediaWiki.php:424
4	0.1078	6294016	OutputPage->output( )	../MediaWiki.php:583
5	0.1080	6300472	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1087	6309800	WebResponse->header( )	../OutputPage.php:2171
7	0.1087	6309944	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	0.0164	3782296	MediaWiki->run( )	../index.php:46
3	0.0164	3783704	MediaWiki->main( )	../MediaWiki.php:424
4	0.1078	6294016	OutputPage->output( )	../MediaWiki.php:583
5	0.1080	6300472	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1092	6309744	WebResponse->header( )	../OutputPage.php:2172
7	0.1093	6309888	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	0.0164	3782296	MediaWiki->run( )	../index.php:46
3	0.0164	3783704	MediaWiki->main( )	../MediaWiki.php:424
4	0.1078	6294016	OutputPage->output( )	../MediaWiki.php:583
5	0.1097	6309744	WebResponse->header( )	../OutputPage.php:2220
6	0.1097	6309888	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	0.0164	3782296	MediaWiki->run( )	../index.php:46
3	0.0164	3783704	MediaWiki->main( )	../MediaWiki.php:424
4	0.1078	6294016	OutputPage->output( )	../MediaWiki.php:583
5	0.1105	6309904	WebResponse->header( )	../OutputPage.php:2227
6	0.1105	6310048	header ( )	../WebResponse.php:37