Internal error

[be481163fe9f75431d6bab81] /index.php?title=Special:Search&search=Templates Wikimedia\Assert\PreconditionException: Precondition failed: This Title instance does not represent a proper page, but merely a link target.

Backtrace:

from /var/www/wiki/vendor/wikimedia/assert/src/Assert.php(49)
#0 /var/www/wiki/includes/Title.php(4190): Wikimedia\Assert\Assert::precondition(boolean, string)
#1 /var/www/wiki/includes/Title.php(4171): Title->assertProperPage()
#2 /var/www/wiki/includes/Revision/RevisionStore.php(1828): Title->getId(boolean)
#3 /var/www/wiki/includes/Revision/RevisionStore.php(1733): MediaWiki\Revision\RevisionStore->ensureRevisionRowMatchesPage(stdClass, Title)
#4 /var/www/wiki/includes/Revision/RevisionStore.php(1609): MediaWiki\Revision\RevisionStore->newRevisionFromRowAndSlots(stdClass, NULL, integer, Title, boolean)
#5 /var/www/wiki/includes/Revision/RevisionStore.php(2348): MediaWiki\Revision\RevisionStore->newRevisionFromRow(stdClass, integer, Title)
#6 /var/www/wiki/includes/Revision/RevisionStore.php(1286): MediaWiki\Revision\RevisionStore->loadRevisionFromConds(Wikimedia\Rdbms\DBConnRef, array, integer, Title)
#7 /var/www/wiki/includes/search/RevisionSearchResultTrait.php(52): MediaWiki\Revision\RevisionStore->getRevisionByTitle(Title, boolean, integer)
#8 /var/www/wiki/includes/search/RevisionSearchResult.php(16): RevisionSearchResult->initFromTitle(Title)
#9 /var/www/wiki/includes/search/SqlSearchResult.php(36): RevisionSearchResult->__construct(Title)
#10 /var/www/wiki/includes/search/SqlSearchResultSet.php(60): SqlSearchResult->__construct(Title, array)
#11 /var/www/wiki/includes/search/SearchResultSet.php(73): SqlSearchResultSet->extractResults()
#12 /var/www/wiki/includes/search/SearchResultSet.php(184): SearchResultSet->count()
#13 /var/www/wiki/includes/search/SearchEngine.php(201): SearchResultSet->shrink(integer)
#14 /var/www/wiki/includes/search/SearchEngine.php(96): SearchEngine->maybePaginate(Closure)
#15 /var/www/wiki/includes/specials/SpecialSearch.php(448): SearchEngine->searchText(string)
#16 /var/www/wiki/includes/specials/SpecialSearch.php(229): SpecialSearch->showResults(string)
#17 /var/www/wiki/includes/specialpage/SpecialPage.php(701): SpecialSearch->execute(NULL)
#18 /var/www/wiki/includes/specialpage/SpecialPageFactory.php(1428): SpecialPage->run(NULL)
#19 /var/www/wiki/includes/MediaWiki.php(316): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, RequestContext)
#20 /var/www/wiki/includes/MediaWiki.php(904): MediaWiki->performRequest()
#21 /var/www/wiki/includes/MediaWiki.php(562): MediaWiki->main()
#22 /var/www/wiki/index.php(50): MediaWiki->run()
#23 /var/www/wiki/index.php(46): wfIndexMain()
#24 {main}