Internal error

[ahXbc82J6tiT6XaMVQh-zwAAGyo] /mediawiki/index.php/SemanticProperty:Year Error: Call to undefined method MediaWiki\Parser\ParserOutput::getText()

Backtrace:

from /var/www/safernicotine.wiki/htdocs/mediawiki/extensions/SemanticMediaWiki/src/MediaWiki/Page/PropertyPage.php(224)
#0 /var/www/safernicotine.wiki/htdocs/mediawiki/extensions/SemanticMediaWiki/src/MediaWiki/Page/Page.php(172): SMW\MediaWiki\Page\PropertyPage->getHtml()
#1 /var/www/safernicotine.wiki/htdocs/mediawiki/extensions/SemanticMediaWiki/src/MediaWiki/Page/Page.php(100): SMW\MediaWiki\Page\Page->showList()
#2 /var/www/safernicotine.wiki/htdocs/mediawiki/includes/actions/ViewAction.php(71): SMW\MediaWiki\Page\Page->view()
#3 /var/www/safernicotine.wiki/htdocs/mediawiki/includes/actions/ActionEntryPoint.php(748): MediaWiki\Actions\ViewAction->show()
#4 /var/www/safernicotine.wiki/htdocs/mediawiki/includes/actions/ActionEntryPoint.php(506): MediaWiki\Actions\ActionEntryPoint->performAction()
#5 /var/www/safernicotine.wiki/htdocs/mediawiki/includes/actions/ActionEntryPoint.php(144): MediaWiki\Actions\ActionEntryPoint->performRequest()
#6 /var/www/safernicotine.wiki/htdocs/mediawiki/includes/MediaWikiEntryPoint.php(184): MediaWiki\Actions\ActionEntryPoint->execute()
#7 /var/www/safernicotine.wiki/htdocs/mediawiki/index.php(44): MediaWiki\MediaWikiEntryPoint->run()
#8 {main}