Editing translations for SecurePoll elections results in an error. Tested on both testwiki and votewiki.
Stack trace from testwiki:
[e40ac990-ba8a-40a3-a405-52972577f1a1] /w/index.php?title=Special:SecurePoll/translate/767/fr&action=submit TypeError: Argument 2 passed to MediaWiki\Storage\PageUpdaterFactory::newPageUpdaterForDerivedPageDataUpdater() must implement interface MediaWiki\User\UserIdentity, null given, called in /srv/mediawiki/php-1.37.0-wmf.16/includes/page/WikiPage.php on line 1813
Backtrace:
from /srv/mediawiki/php-1.37.0-wmf.16/includes/Storage/PageUpdaterFactory.php(215)
#0 /srv/mediawiki/php-1.37.0-wmf.16/includes/page/WikiPage.php(1813): MediaWiki\Storage\PageUpdaterFactory->newPageUpdaterForDerivedPageDataUpdater(WikiPage, NULL, MediaWiki\Storage\DerivedPageDataUpdater)
#1 /srv/mediawiki/php-1.37.0-wmf.16/extensions/SecurePoll/includes/Pages/TranslatePage.php(334): WikiPage->newPageUpdater(NULL)
#2 /srv/mediawiki/php-1.37.0-wmf.16/extensions/SecurePoll/includes/Pages/TranslatePage.php(147): MediaWiki\Extensions\SecurePoll\Pages\TranslatePage->doSubmit(string)
#3 /srv/mediawiki/php-1.37.0-wmf.16/extensions/SecurePoll/includes/SpecialSecurePoll.php(70): MediaWiki\Extensions\SecurePoll\Pages\TranslatePage->execute(array)
#4 /srv/mediawiki/php-1.37.0-wmf.16/includes/specialpage/SpecialPage.php(646): MediaWiki\Extensions\SecurePoll\SpecialSecurePoll->execute(string)
#5 /srv/mediawiki/php-1.37.0-wmf.16/includes/specialpage/SpecialPageFactory.php(1365): SpecialPage->run(string)
#6 /srv/mediawiki/php-1.37.0-wmf.16/includes/MediaWiki.php(314): MediaWiki\SpecialPage\SpecialPageFactory->executePath(string, RequestContext)
#7 /srv/mediawiki/php-1.37.0-wmf.16/includes/MediaWiki.php(925): MediaWiki->performRequest()
#8 /srv/mediawiki/php-1.37.0-wmf.16/includes/MediaWiki.php(559): MediaWiki->main()
#9 /srv/mediawiki/php-1.37.0-wmf.16/index.php(53): MediaWiki->run()
#10 /srv/mediawiki/php-1.37.0-wmf.16/index.php(46): wfIndexMain()
#11 /srv/mediawiki/w/index.php(3): require(string)
#12 {main}