[{reqId}] {exception_url}   RuntimeException: Database serialization may cause problems, since the connection is not restored on wakeup

from /srv/mediawiki/php-1.43.0-wmf.4/includes/libs/rdbms/database/Database.php(3221)
#0 [internal function]: Wikimedia\Rdbms\Database->__sleep()
#1 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/User/Voter.php(227): serialize(array)
#2 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/User/Voter.php(119): MediaWiki\Extension\SecurePoll\User\Voter::encodeProperties(array)
#3 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/Context.php(220): MediaWiki\Extension\SecurePoll\User\Voter::createVoter(MediaWiki\Extension\SecurePoll\Context, array)
#4 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/User/Auth.php(147): MediaWiki\Extension\SecurePoll\Context->createVoter(array)
#5 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/User/LocalAuth.php(51): MediaWiki\Extension\SecurePoll\User\Auth->getVoter(array)
#6 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/User/Auth.php(160): MediaWiki\Extension\SecurePoll\User\LocalAuth->autoLogin(MediaWiki\Extension\SecurePoll\Entities\Election)
#7 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/Pages/VotePage.php(100): MediaWiki\Extension\SecurePoll\User\Auth->newAutoSession(MediaWiki\Extension\SecurePoll\Entities\Election)
#8 /srv/mediawiki/php-1.43.0-wmf.4/extensions/SecurePoll/includes/SpecialSecurePoll.php(65): MediaWiki\Extension\SecurePoll\Pages\VotePage->execute(array)
#9 /srv/mediawiki/php-1.43.0-wmf.4/includes/specialpage/SpecialPage.php(719): MediaWiki\Extension\SecurePoll\SpecialSecurePoll->execute(string)
#10 /srv/mediawiki/php-1.43.0-wmf.4/includes/specialpage/SpecialPageFactory.php(1672): MediaWiki\SpecialPage\SpecialPage->run(string)
#11 /srv/mediawiki/php-1.43.0-wmf.4/includes/actions/ActionEntryPoint.php(502): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, MediaWiki\Context\RequestContext)
#12 /srv/mediawiki/php-1.43.0-wmf.4/includes/actions/ActionEntryPoint.php(145): MediaWiki\Actions\ActionEntryPoint->performRequest()
#13 /srv/mediawiki/php-1.43.0-wmf.4/includes/MediaWikiEntryPoint.php(199): MediaWiki\Actions\ActionEntryPoint->execute()
#14 /srv/mediawiki/php-1.43.0-wmf.4/index.php(58): MediaWiki\MediaWikiEntryPoint->run()
#15 /srv/mediawiki/w/index.php(3): require(string)
#16 {main}