[a18a0ca7a64f74bc341e3c2a] /Dev/core/index.php/Special:WatchSubpages Error from line 387 of C:\xampp\htdocs\Dev\core\extensions\WatchSubpages\WatchSubpages_body.php: Call to a member function isTalkPage() on null

Backtrace:

#0 C:\xampp\htdocs\Dev\core\extensions\WatchSubpages\WatchSubpages_body.php(339): WatchSubpages->getWatchlist()
#1 C:\xampp\htdocs\Dev\core\includes\htmlform\HTMLForm.php(660): WatchSubpages->submitRaw(array, EditWatchlistNormalHTMLForm)
#2 C:\xampp\htdocs\Dev\core\includes\htmlform\HTMLForm.php(552): HTMLForm->trySubmit()
#3 C:\xampp\htdocs\Dev\core\includes\htmlform\HTMLForm.php(567): HTMLForm->tryAuthorizedSubmit()
#4 C:\xampp\htdocs\Dev\core\extensions\WatchSubpages\WatchSubpages_body.php(96): HTMLForm->show()
#5 C:\xampp\htdocs\Dev\core\includes\specialpage\SpecialPage.php(522): WatchSubpages->execute(NULL)
#6 C:\xampp\htdocs\Dev\core\includes\specialpage\SpecialPageFactory.php(568): SpecialPage->run(NULL)
#7 C:\xampp\htdocs\Dev\core\includes\MediaWiki.php(288): SpecialPageFactory::executePath(Title, RequestContext)
#8 C:\xampp\htdocs\Dev\core\includes\MediaWiki.php(861): MediaWiki->performRequest()
#9 C:\xampp\htdocs\Dev\core\includes\MediaWiki.php(524): MediaWiki->main()
#10 C:\xampp\htdocs\Dev\core\index.php(42): MediaWiki->run()
#11 {main}