( ! ) Warning: Search backend error during near_match search for '3.21.12.168' after 19. 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	233896	{main}( )	../index.php:0
2	0.0090	3376040	MediaWiki->run( )	../index.php:46
3	0.0090	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	0.0457	3551696	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.1004	4379424	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.1009	4433360	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.1009	4433728	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.2842	5795624	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.3178	5801568	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.3178	5802320	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.3298	5817320	Hooks::run( )	../SearchEngine.php:231
12	0.3299	5818920	call_user_func_array ( )	../Hooks.php:209
13	0.3299	5819624	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.3349	5893656	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.3356	5939680	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.3381	6174736	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.3384	6206320	PoolCounterWork->execute( )	../Util.php:133
18	0.3491	6230576	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.3491	6230760	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.3491	6230832	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.3492	6232768	PoolCounterWork->execute( )	../Util.php:129
22	0.3492	6233416	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.3492	6233600	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.3492	6233720	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.3681	6347976	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.3682	6351912	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.3682	6352192	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.3683	6353496	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.3684	6353888	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	233896	{main}( )	../index.php:0
2	0.0090	3376040	MediaWiki->run( )	../index.php:46
3	0.0090	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	0.3724	6277200	OutputPage->output( )	../MediaWiki.php:583
5	0.3726	6283656	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.3727	6284952	WebResponse->header( )	../OutputPage.php:2134
7	0.3727	6285096	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	233896	{main}( )	../index.php:0
2	0.0090	3376040	MediaWiki->run( )	../index.php:46
3	0.0090	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	0.3724	6277200	OutputPage->output( )	../MediaWiki.php:583
5	0.3726	6283656	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.3734	6292984	WebResponse->header( )	../OutputPage.php:2171
7	0.3734	6293128	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	233896	{main}( )	../index.php:0
2	0.0090	3376040	MediaWiki->run( )	../index.php:46
3	0.0090	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	0.3724	6277200	OutputPage->output( )	../MediaWiki.php:583
5	0.3726	6283656	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.3739	6292928	WebResponse->header( )	../OutputPage.php:2172
7	0.3739	6293072	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	233896	{main}( )	../index.php:0
2	0.0090	3376040	MediaWiki->run( )	../index.php:46
3	0.0090	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	0.3724	6277200	OutputPage->output( )	../MediaWiki.php:583
5	0.3743	6292928	WebResponse->header( )	../OutputPage.php:2220
6	0.3743	6293072	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	233896	{main}( )	../index.php:0
2	0.0090	3376040	MediaWiki->run( )	../index.php:46
3	0.0090	3377448	MediaWiki->main( )	../MediaWiki.php:424
4	0.3724	6277200	OutputPage->output( )	../MediaWiki.php:583
5	0.3988	6293080	WebResponse->header( )	../OutputPage.php:2227
6	0.3988	6293224	header ( )	../WebResponse.php:37