```
[XYtBGf4qO5tFANELvYHIIQAAAAE] /wiki/%D9%88%DB%8C%DA%98%D9%87:Duplicator Error from line 1384 of /home/wikicod/domains/wikicod.ir/public_html/w/includes/page/WikiPage.php: Call to a member function getId() on null
Backtrace:
0 /home/wikicod/domains/wikicod.ir/public_html/w/includes/page/Article.php(2793): WikiPage->updateRevisionOn(Wikimedia\Rdbms\DatabaseMysqli, NULL, NULL, NULL)
1 /home/wikicod/domains/wikicod.ir/public_html/w/extensions/Duplicator/Duplicator.page.php(339): Article->updateRevisionOn(Wikimedia\Rdbms\DatabaseMysqli, NULL)
2 /home/wikicod/domains/wikicod.ir/public_html/w/extensions/Duplicator/Duplicator.page.php(115): SpecialDuplicator->duplicate(Title, Title, boolean)
3 /home/wikicod/domains/wikicod.ir/public_html/w/includes/specialpage/SpecialPage.php(569): SpecialDuplicator->execute(NULL)
4 /home/wikicod/domains/wikicod.ir/public_html/w/includes/specialpage/SpecialPageFactory.php(558): SpecialPage->run(NULL)
5 /home/wikicod/domains/wikicod.ir/public_html/w/includes/MediaWiki.php(288): MediaWiki\Special\SpecialPageFactory->executePath(Title, RequestContext)
6 /home/wikicod/domains/wikicod.ir/public_html/w/includes/MediaWiki.php(865): MediaWiki->performRequest()
7 /home/wikicod/domains/wikicod.ir/public_html/w/includes/MediaWiki.php(515): MediaWiki->main()
8 /home/wikicod/domains/wikicod.ir/public_html/w/index.php(42): MediaWiki->run()
9 {main}
```
Duplicator extension not working in version 1.33 and later. I wrote patch to fix it.
[[ https://www.mediawiki.org/wiki/Extension_talk:Duplicator#not_Duplicator_copy | Here's the bug ]]
[[ https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Duplicator/+/591434 | Here's the patch ]]