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2026-01-19T09:33:08+03:00 DEBUG: VuFindSearch\Backend\Solr\Connector: Query fl=%2A&spellcheck=true&facet=true&facet.limit=30&facet.field=topic_facet&facet.field=institution&facet.field=building&facet.field=format&facet.field=callnumber-first&facet.field=author_facet&facet.field=language&facet.field=genre_facet&facet.field=era_facet&facet.field=geographic_facet&facet.field=publishDate&facet.sort=count&facet.mincount=1&sort=score+desc%2Cid+asc&hl=true&hl.simple.pre=%7B%7B%7B%7BSTART_HILITE%7D%7D%7D%7D&hl.simple.post=%7B%7B%7B%7BEND_HILITE%7D%7D%7D%7D&spellcheck.dictionary=default&wt=json&json.nl=arrarr&rows=20&start=0&spellcheck.q=forest+%28%28cooperation+OR+operationsssssss%29+OR+cocococococococococococococococococooperationsss%29&qf=title_short%5E750+title_full_unstemmed%5E600+title_full%5E400+title%5E500+title_alt%5E200+title_new%5E100+series%5E50+series2%5E30+author%5E300+contents%5E10+topic_unstemmed%5E550+topic%5E500+geographic%5E300+genre%5E300+allfields_unstemmed%5E10+fulltext_unstemmed%5E10+allfields+fulltext+description+isbn+issn+long_lat_display&qt=edismax&mm=0%25&hl.fl=title_short%2Ctitle_full_unstemmed%2Ctitle_full%2Ctitle%2Ctitle_alt%2Ctitle_new%2Cseries%2Cseries2%2Cauthor%2Ccontents%2Ctopic_unstemmed%2Ctopic%2Cgeographic%2Cgenre%2Callfields_unstemmed%2Cfulltext_unstemmed%2Callfields%2Cfulltext%2Cdescription%2Cisbn%2Cissn%2Clong_lat_display&q=forest+%28%28cooperation+OR+operationsssssss%29+OR+cocococococococococococococococococooperationsss%29
2026-01-19T09:33:08+03:00 DEBUG: VuFindSearch\Backend\Solr\Connector: => GET http://127.0.0.1:8983/solr/biblio/select?fl=%2A&spellcheck=true&facet=true&facet.limit=30&facet.field=topic_facet&facet.field=institution&facet.field=building&facet.field=format&facet.field=callnumber-first&facet.field=author_facet&facet.field=language&facet.field=genre_facet&facet.field=era_facet&facet.field=geographic_facet&facet.field=publishDate&facet.sort=count&facet.mincount=1&sort=score+desc%2Cid+asc&hl=true&hl.simple.pre=%7B%7B%7B%7BSTART_HILITE%7D%7D%7D%7D&hl.simple.post=%7B%7B%7B%7BEND_HILITE%7D%7D%7D%7D&spellcheck.dictionary=default&wt=json&json.nl=arrarr&rows=20&start=0&spellcheck.q=forest+%28%28cooperation+OR+operationsssssss%29+OR+cocococococococococococococococococooperationsss%29&qf=title_short%5E750+title_full_unstemmed%5E600+title_full%5E400+title%5E500+title_alt%5E200+title_new%5E100+series%5E50+series2%5E30+author%5E300+contents%5E10+topic_unstemmed%5E550+topic%5E500+geographic%5E300+genre%5E300+allfields_unstemmed%5E10+fulltext_unstemmed%5E10+allfields+fulltext+description+isbn+issn+long_lat_display&qt=edismax&mm=0%25&hl.fl=title_short%2Ctitle_full_unstemmed%2Ctitle_full%2Ctitle%2Ctitle_alt%2Ctitle_new%2Cseries%2Cseries2%2Cauthor%2Ccontents%2Ctopic_unstemmed%2Ctopic%2Cgeographic%2Cgenre%2Callfields_unstemmed%2Cfulltext_unstemmed%2Callfields%2Cfulltext%2Cdescription%2Cisbn%2Cissn%2Clong_lat_display&q=forest+%28%28cooperation+OR+operationsssssss%29+OR+cocococococococococococococococococooperationsss%29
2026-01-19T09:33:10+03:00 DEBUG: VuFindSearch\Backend\Solr\Connector: <= 503 Service Unavailable
2026-01-19T09:33:10+03:00 CRIT: VuFindSearch\Backend\Exception\RemoteErrorException : 503 Service Unavailable
Server Context:
Array
(
[REDIRECT_SCRIPT_URL] => /vufind/Search/Results
[REDIRECT_SCRIPT_URI] => https://library.mzumbe.ac.tz/vufind/Search/Results
[REDIRECT_VUFIND_LOCAL_DIR] => /usr/local/vufind/local
[REDIRECT_HTTPS] => on
[REDIRECT_SSL_TLS_SNI] => library.mzumbe.ac.tz
[REDIRECT_STATUS] => 200
[SCRIPT_URL] => /vufind/Search/Results
[SCRIPT_URI] => https://library.mzumbe.ac.tz/vufind/Search/Results
[VUFIND_LOCAL_DIR] => /usr/local/vufind/local
[HTTPS] => on
[SSL_TLS_SNI] => library.mzumbe.ac.tz
[SSL_SERVER_S_DN_CN] => *.mzumbe.ac.tz
[SSL_SERVER_I_DN_C] => US
[SSL_SERVER_I_DN_ST] => Texas
[SSL_SERVER_I_DN_L] => Houston
[SSL_SERVER_I_DN_O] => SSL Corporation
[SSL_SERVER_I_DN_CN] => SSL.com RSA SSL subCA
[SSL_SERVER_SAN_DNS_0] => *.mzumbe.ac.tz
[SSL_SERVER_SAN_DNS_1] => mzumbe.ac.tz
[SSL_VERSION_INTERFACE] => mod_ssl/2.4.58
[SSL_VERSION_LIBRARY] => OpenSSL/3.0.13
[SSL_PROTOCOL] => TLSv1.3
[SSL_SECURE_RENEG] => true
[SSL_COMPRESS_METHOD] => NULL
[SSL_CIPHER] => TLS_AES_256_GCM_SHA384
[SSL_CIPHER_EXPORT] => false
[SSL_CIPHER_USEKEYSIZE] => 256
[SSL_CIPHER_ALGKEYSIZE] => 256
[SSL_CLIENT_VERIFY] => NONE
[SSL_SERVER_M_VERSION] => 3
[SSL_SERVER_M_SERIAL] => 703093EA2AE0D6484135BA7D52999617
[SSL_SERVER_V_START] => Sep 17 21:21:19 2025 GMT
[SSL_SERVER_V_END] => Oct 18 21:21:19 2026 GMT
[SSL_SERVER_S_DN] => CN=*.mzumbe.ac.tz
[SSL_SERVER_I_DN] => CN=SSL.com RSA SSL subCA,O=SSL Corporation,L=Houston,ST=Texas,C=US
[SSL_SERVER_A_KEY] => rsaEncryption
[SSL_SERVER_A_SIG] => sha256WithRSAEncryption
[SSL_SESSION_ID] => 5afe1e36ea103dbafa2125193149dcd55f1c51e83deeda36b1e05cd556396081
[SSL_SESSION_RESUMED] => Initial
[HTTP_ACCEPT] => */*
[HTTP_USER_AGENT] => Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
[HTTP_ACCEPT_ENCODING] => gzip, br, zstd, deflate
[HTTP_HOST] => library.mzumbe.ac.tz
[PATH] => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin
[SERVER_SIGNATURE] => Apache/2.4.58 (Ubuntu) Server at library.mzumbe.ac.tz Port 443
[SERVER_SOFTWARE] => Apache/2.4.58 (Ubuntu)
[SERVER_NAME] => library.mzumbe.ac.tz
[SERVER_ADDR] => 192.168.30.25
[SERVER_PORT] => 443
[REMOTE_ADDR] => 216.73.216.173
[DOCUMENT_ROOT] => /var/www/html
[REQUEST_SCHEME] => https
[CONTEXT_PREFIX] => /vufind
[CONTEXT_DOCUMENT_ROOT] => /usr/local/vufind/public
[SERVER_ADMIN] => [no address given]
[SCRIPT_FILENAME] => /usr/local/vufind/public/index.php
[REMOTE_PORT] => 26253
[REDIRECT_URL] => /vufind/Search/Results
[REDIRECT_QUERY_STRING] => lookfor=forest+%28%28cooperation+OR+operationsssssss%29+OR+cocococococococococococococococococooperationsss%29&type=AllFields
[GATEWAY_INTERFACE] => CGI/1.1
[SERVER_PROTOCOL] => HTTP/1.1
[REQUEST_METHOD] => GET
[QUERY_STRING] => lookfor=forest+%28%28cooperation+OR+operationsssssss%29+OR+cocococococococococococococococococooperationsss%29&type=AllFields
[REQUEST_URI] => /vufind/Search/Results?lookfor=forest+%28%28cooperation+OR+operationsssssss%29+OR+cocococococococococococococococococooperationsss%29&type=AllFields
[SCRIPT_NAME] => /vufind/index.php
[PHP_SELF] => /vufind/index.php
[REQUEST_TIME_FLOAT] => 1768804387.6408
[REQUEST_TIME] => 1768804387
)
Backtrace:
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Backend/Solr/Connector.php line 497 - class = VuFindSearch\Backend\Exception\HttpErrorException, function = createFromResponse, args: none.
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Backend/Solr/Connector.php line 435 - class = VuFindSearch\Backend\Solr\Connector, function = send, args: none.
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Backend/Solr/Connector.php line 320 - class = VuFindSearch\Backend\Solr\Connector, function = trySolrUrls, args: none.
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Backend/Solr/Connector.php line 244 - class = VuFindSearch\Backend\Solr\Connector, function = query, args: none.
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Backend/Solr/Backend.php line 169 - class = VuFindSearch\Backend\Solr\Connector, function = search, args: none.
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Backend/Solr/Backend.php line 140 - class = VuFindSearch\Backend\Solr\Backend, function = rawJsonSearch, args: none.
unlisted file line unlisted - class = VuFindSearch\Backend\Solr\Backend, function = search, args: none.
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Command/CallMethodCommand.php line 137 - function = call_user_func, args: none.
/usr/local/vufind/module/VuFindSearch/src/VuFindSearch/Service.php line 104 - class = VuFindSearch\Command\CallMethodCommand, function = execute, args: none.
/usr/local/vufind/module/VuFind/src/VuFind/Search/Solr/Results.php line 218 - class = VuFindSearch\Service, function = invoke, args: none.
/usr/local/vufind/module/VuFind/src/VuFind/Search/Base/Results.php line 320 - class = VuFind\Search\Solr\Results, function = performSearch, args: none.
/usr/local/vufind/module/VuFind/src/VuFind/Search/SearchRunner.php line 153 - class = VuFind\Search\Base\Results, function = performAndProcessSearch, args: none.
/usr/local/vufind/module/VuFind/src/VuFind/Controller/AbstractSearch.php line 377 - class = VuFind\Search\SearchRunner, function = run, args: none.
/usr/local/vufind/module/VuFind/src/VuFind/Controller/AbstractSearch.php line 308 - class = VuFind\Controller\AbstractSearch, function = getSearchResultsView, args: none.
/usr/local/vufind/module/VuFind/src/VuFind/Controller/SearchController.php line 470 - class = VuFind\Controller\AbstractSearch, function = resultsAction, args: none.
/usr/local/vufind/vendor/laminas/laminas-mvc/src/Controller/AbstractActionController.php line 72 - class = VuFind\Controller\SearchController, function = resultsAction, args: none.
/usr/local/vufind/vendor/laminas/laminas-eventmanager/src/EventManager.php line 319 - class = Laminas\Mvc\Controller\AbstractActionController, function = onDispatch, args: none.
/usr/local/vufind/vendor/laminas/laminas-eventmanager/src/EventManager.php line 177 - class = Laminas\EventManager\EventManager, function = triggerListeners, args: none.
/usr/local/vufind/vendor/laminas/laminas-mvc/src/Controller/AbstractController.php line 105 - class = Laminas\EventManager\EventManager, function = triggerEventUntil, args: none.
/usr/local/vufind/vendor/laminas/laminas-mvc/src/DispatchListener.php line 117 - class = Laminas\Mvc\Controller\AbstractController, function = dispatch, args: none.
/usr/local/vufind/vendor/laminas/laminas-eventmanager/src/EventManager.php line 319 - class = Laminas\Mvc\DispatchListener, function = onDispatch, args: none.
/usr/local/vufind/vendor/laminas/laminas-eventmanager/src/EventManager.php line 177 - class = Laminas\EventManager\EventManager, function = triggerListeners, args: none.
/usr/local/vufind/vendor/laminas/laminas-mvc/src/Application.php line 319 - class = Laminas\EventManager\EventManager, function = triggerEventUntil, args: none.
/usr/local/vufind/public/index.php line 23 - class = Laminas\Mvc\Application, function = run, args: none.
An error has occurred
An error occurred during execution; please try again later.
Please contact the Library Reference Department for assistance
library.services@mzumbe.ac.tz