( ! ) Warning: Search backend error during near_match search for '3.17.177.21' after 15. 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	238728	{main}( )	../index.php:0
2	0.0160	3383880	MediaWiki->run( )	../index.php:46
3	0.0161	3385288	MediaWiki->main( )	../MediaWiki.php:424
4	0.0270	3559488	MediaWiki->performRequest( )	../MediaWiki.php:573
5	0.0415	4387192	SpecialPageFactory::executePath( )	../MediaWiki.php:270
6	0.0420	4441104	SpecialPage->run( )	../SpecialPageFactory.php:581
7	0.0423	4441472	SpecialSearch->execute( )	../SpecialPage.php:383
8	0.0903	5803592	SpecialSearch->goResult( )	../SpecialSearch.php:117
9	0.1041	5809712	SearchEngine::getNearMatch( )	../SpecialSearch.php:188
10	0.1041	5810464	SearchEngine::getNearMatchInternal( )	../SearchEngine.php:139
11	0.1091	5825464	Hooks::run( )	../SearchEngine.php:231
12	0.1091	5827064	call_user_func_array ( )	../Hooks.php:209
13	0.1091	5827768	CirrusSearch\Hooks::onSearchGetNearMatch( )	../Hooks.php:209
14	0.1097	5901816	CirrusSearch\Searcher->nearMatchTitleSearch( )	../Hooks.php:408
15	0.1104	5947848	CirrusSearch\Searcher->search( )	../Searcher.php:268
16	0.1212	6182944	CirrusSearch\Util::doPoolCounterWork( )	../Searcher.php:1079
17	0.1214	6214544	PoolCounterWork->execute( )	../Util.php:133
18	0.1216	6238800	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
19	0.1216	6238984	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
20	0.1216	6239056	CirrusSearch\Util::CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
21	0.1216	6240992	PoolCounterWork->execute( )	../Util.php:129
22	0.1217	6241640	PoolCounterWorkViaCallback->doWork( )	../PoolCounterWork.php:123
23	0.1217	6241824	call_user_func_array ( )	../PoolCounterWorkViaCallback.php:69
24	0.1217	6241944	CirrusSearch\Searcher->CirrusSearch\{closure}( )	../PoolCounterWorkViaCallback.php:69
25	0.1366	6356224	CirrusSearch\ElasticsearchIntermediary->failure( )	../Searcher.php:1063
26	0.1372	6360160	wfLogWarning( )	../ElasticsearchIntermediary.php:98
27	0.1372	6360440	MWDebug::warning( )	../GlobalFunctions.php:1247
28	0.1373	6361744	MWDebug::sendMessage( )	../MWDebug.php:155
29	0.1373	6362136	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	238728	{main}( )	../index.php:0
2	0.0160	3383880	MediaWiki->run( )	../index.php:46
3	0.0161	3385288	MediaWiki->main( )	../MediaWiki.php:424
4	0.1391	6285416	OutputPage->output( )	../MediaWiki.php:583
5	0.1393	6291864	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1394	6293160	WebResponse->header( )	../OutputPage.php:2134
7	0.1394	6293304	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	238728	{main}( )	../index.php:0
2	0.0160	3383880	MediaWiki->run( )	../index.php:46
3	0.0161	3385288	MediaWiki->main( )	../MediaWiki.php:424
4	0.1391	6285416	OutputPage->output( )	../MediaWiki.php:583
5	0.1393	6291864	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1401	6301192	WebResponse->header( )	../OutputPage.php:2171
7	0.1401	6301336	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	238728	{main}( )	../index.php:0
2	0.0160	3383880	MediaWiki->run( )	../index.php:46
3	0.0161	3385288	MediaWiki->main( )	../MediaWiki.php:424
4	0.1391	6285416	OutputPage->output( )	../MediaWiki.php:583
5	0.1393	6291864	OutputPage->sendCacheControl( )	../OutputPage.php:2218
6	0.1408	6301136	WebResponse->header( )	../OutputPage.php:2172
7	0.1408	6301280	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	238728	{main}( )	../index.php:0
2	0.0160	3383880	MediaWiki->run( )	../index.php:46
3	0.0161	3385288	MediaWiki->main( )	../MediaWiki.php:424
4	0.1391	6285416	OutputPage->output( )	../MediaWiki.php:583
5	0.1413	6301136	WebResponse->header( )	../OutputPage.php:2220
6	0.1413	6301280	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	238728	{main}( )	../index.php:0
2	0.0160	3383880	MediaWiki->run( )	../index.php:46
3	0.0161	3385288	MediaWiki->main( )	../MediaWiki.php:424
4	0.1391	6285416	OutputPage->output( )	../MediaWiki.php:583
5	0.1419	6301296	WebResponse->header( )	../OutputPage.php:2227
6	0.1419	6301440	header ( )	../WebResponse.php:37