[{reqId}] {exception_url}   PHP Notice: Undefined offset: 1

from /srv/mediawiki/php-1.39.0-wmf.7/extensions/TwoColConflict/includes/TalkPageConflict/ResolutionSuggester.php(71)
#0 /srv/mediawiki/php-1.39.0-wmf.7/extensions/TwoColConflict/includes/TalkPageConflict/ResolutionSuggester.php(71): MWExceptionHandler::handleError(integer, string, string, integer, array)
#1 /srv/mediawiki/php-1.39.0-wmf.7/extensions/TwoColConflict/includes/SplitTwoColConflictHelper.php(168): TwoColConflict\TalkPageConflict\ResolutionSuggester->getResolutionSuggestion(array, array)
#2 /srv/mediawiki/php-1.39.0-wmf.7/includes/EditPage.php(3117): TwoColConflict\SplitTwoColConflictHelper->getEditFormHtmlBeforeContent()
#3 /srv/mediawiki/php-1.39.0-wmf.7/includes/EditPage.php(729): EditPage->showEditForm()
#4 /srv/mediawiki/php-1.39.0-wmf.7/includes/actions/EditAction.php(71): EditPage->edit()
#5 /srv/mediawiki/php-1.39.0-wmf.7/includes/actions/SubmitAction.php(38): EditAction->show()
#6 /srv/mediawiki/php-1.39.0-wmf.7/includes/MediaWiki.php(546): SubmitAction->show()
#7 /srv/mediawiki/php-1.39.0-wmf.7/includes/MediaWiki.php(322): MediaWiki->performAction(Article, Title)
#8 /srv/mediawiki/php-1.39.0-wmf.7/includes/MediaWiki.php(912): MediaWiki->performRequest()
#9 /srv/mediawiki/php-1.39.0-wmf.7/includes/MediaWiki.php(566): MediaWiki->main()
#10 /srv/mediawiki/php-1.39.0-wmf.7/index.php(50): MediaWiki->run()
#11 /srv/mediawiki/php-1.39.0-wmf.7/index.php(46): wfIndexMain()
#12 /srv/mediawiki/w/index.php(3): require(string)
#13 {main}