After creating a newsletter, I go to edit page and get error:
[06455bd408a74e80a787a0c1] /index.php?title=Newsletter:%D0%9D%D0%BE%D0%B2%D1%8B%D0%B5_%D0%BF%D1%83%D0%B1%D0%BB%D0%B8%D0%BA%D0%B0%D1%86%D0%B8%D0%B8&action=edit Error from line 92 of /var/www/anthecologyorg/data/www/anthecology.org/extensions/Newsletter/includes/NewsletterEditPage.php: Call to a member function getPrefixedText() on null
Backtrace:
#0 /var/www/anthecologyorg/data/www/anthecology.org/extensions/Newsletter/includes/NewsletterEditPage.php(41): NewsletterEditPage->getManageForm() #1 /var/www/anthecologyorg/data/www/anthecology.org/extensions/Newsletter/Newsletter.hooks.php(195): NewsletterEditPage->edit() #2 /var/www/anthecologyorg/data/www/anthecology.org/includes/Hooks.php(195): NewsletterHooks::onCustomEditor(Article, User) #3 /var/www/anthecologyorg/data/www/anthecology.org/includes/actions/EditAction.php(57): Hooks::run(string, array) #4 /var/www/anthecologyorg/data/www/anthecology.org/includes/MediaWiki.php(495): EditAction->show() #5 /var/www/anthecologyorg/data/www/anthecology.org/includes/MediaWiki.php(289): MediaWiki->performAction(Article, Title) #6 /var/www/anthecologyorg/data/www/anthecology.org/includes/MediaWiki.php(851): MediaWiki->performRequest() #7 /var/www/anthecologyorg/data/www/anthecology.org/includes/MediaWiki.php(512): MediaWiki->main() #8 /var/www/anthecologyorg/data/www/anthecology.org/index.php(43): MediaWiki->run() #9 {main}