( ! ) Warning: Search backend error during near_match search for '3.21.104.31' 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	0.0001	233896	{main}( )	../index.php:0
2	0.0089	3375864	MediaWiki->run( )	../index.php:46
3	0.0090	3377272	MediaWiki->main( )	../MediaWiki.php:424
4	0.0174	3551360	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.0322	4378888	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.0326	4432784	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.0327	4433152	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.0806	5795232	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.0907	5801488	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.0907	5802240	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.0977	5817240	Hooks::run( )	../SearchEngine.php:231
12	0.0977	5818840	call_user_func_array ( )	../Hooks.php:209
13	0.0977	5819544	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.0983	5893576	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.0990	5939608	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.1067	6174616	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.1081	6206200	PoolCounterWork->execute( )	../Util.php:133
18	0.1082	6230456	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.1082	6230640	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.1082	6230712	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.1082	6232648	PoolCounterWork->execute( )	../Util.php:129
22	0.1083	6233296	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.1083	6233480	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.1083	6233600	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.1241	6347864	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.1242	6351800	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.1242	6352080	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.1243	6353384	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.1243	6353776	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	233896	{main}( )	../index.php:0
2	0.0089	3375864	MediaWiki->run( )	../index.php:46
3	0.0090	3377272	MediaWiki->main( )	../MediaWiki.php:424
4	0.1262	6277088	OutputPage->output( )	../MediaWiki.php:583
5	0.1264	6283544	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1266	6284840	WebResponse->header( )	../OutputPage.php:2134
7	0.1266	6284984	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	233896	{main}( )	../index.php:0
2	0.0089	3375864	MediaWiki->run( )	../index.php:46
3	0.0090	3377272	MediaWiki->main( )	../MediaWiki.php:424
4	0.1262	6277088	OutputPage->output( )	../MediaWiki.php:583
5	0.1264	6283544	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1273	6292872	WebResponse->header( )	../OutputPage.php:2171
7	0.1273	6293016	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	233896	{main}( )	../index.php:0
2	0.0089	3375864	MediaWiki->run( )	../index.php:46
3	0.0090	3377272	MediaWiki->main( )	../MediaWiki.php:424
4	0.1262	6277088	OutputPage->output( )	../MediaWiki.php:583
5	0.1264	6283544	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1280	6292816	WebResponse->header( )	../OutputPage.php:2172
7	0.1280	6292960	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	233896	{main}( )	../index.php:0
2	0.0089	3375864	MediaWiki->run( )	../index.php:46
3	0.0090	3377272	MediaWiki->main( )	../MediaWiki.php:424
4	0.1262	6277088	OutputPage->output( )	../MediaWiki.php:583
5	0.1286	6292816	WebResponse->header( )	../OutputPage.php:2220
6	0.1286	6292960	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	233896	{main}( )	../index.php:0
2	0.0089	3375864	MediaWiki->run( )	../index.php:46
3	0.0090	3377272	MediaWiki->main( )	../MediaWiki.php:424
4	0.1262	6277088	OutputPage->output( )	../MediaWiki.php:583
5	0.1292	6292968	WebResponse->header( )	../OutputPage.php:2227
6	0.1292	6293112	header ( )	../WebResponse.php:37