( ! ) Warning: Search backend error during near_match search for '18.117.10.27' 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	233960	{main}( )	../index.php:0
2	0.0107	3376416	MediaWiki->run( )	../index.php:46
3	0.0108	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	0.0209	3551992	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.0350	4379496	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.0354	4433376	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.0354	4433744	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.0792	5795872	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.0926	5802128	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.0926	5802880	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.1000	5817880	Hooks::run( )	../SearchEngine.php:231
12	0.1000	5819480	call_user_func_array ( )	../Hooks.php:209
13	0.1000	5820184	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.1003	5894224	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.1011	5940264	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.1080	6175368	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.1083	6208144	PoolCounterWork->execute( )	../Util.php:133
18	0.1085	6232616	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.1085	6232800	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.1085	6232872	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.1085	6234840	PoolCounterWork->execute( )	../Util.php:129
22	0.1086	6235488	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.1086	6235672	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.1086	6235792	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.1103	6350072	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.1104	6354008	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.1104	6354288	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.1105	6355592	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.1105	6355984	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	233960	{main}( )	../index.php:0
2	0.0107	3376416	MediaWiki->run( )	../index.php:46
3	0.0108	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	0.1124	6279208	OutputPage->output( )	../MediaWiki.php:583
5	0.1126	6285664	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1127	6286960	WebResponse->header( )	../OutputPage.php:2134
7	0.1127	6287104	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	233960	{main}( )	../index.php:0
2	0.0107	3376416	MediaWiki->run( )	../index.php:46
3	0.0108	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	0.1124	6279208	OutputPage->output( )	../MediaWiki.php:583
5	0.1126	6285664	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1134	6294992	WebResponse->header( )	../OutputPage.php:2171
7	0.1134	6295136	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	233960	{main}( )	../index.php:0
2	0.0107	3376416	MediaWiki->run( )	../index.php:46
3	0.0108	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	0.1124	6279208	OutputPage->output( )	../MediaWiki.php:583
5	0.1126	6285664	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1138	6294936	WebResponse->header( )	../OutputPage.php:2172
7	0.1139	6295080	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	233960	{main}( )	../index.php:0
2	0.0107	3376416	MediaWiki->run( )	../index.php:46
3	0.0108	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	0.1124	6279208	OutputPage->output( )	../MediaWiki.php:583
5	0.1143	6294936	WebResponse->header( )	../OutputPage.php:2220
6	0.1143	6295080	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	233960	{main}( )	../index.php:0
2	0.0107	3376416	MediaWiki->run( )	../index.php:46
3	0.0108	3377824	MediaWiki->main( )	../MediaWiki.php:424
4	0.1124	6279208	OutputPage->output( )	../MediaWiki.php:583
5	0.1149	6295096	WebResponse->header( )	../OutputPage.php:2227
6	0.1149	6295240	header ( )	../WebResponse.php:37