Exception encountered, of type "Error"
[991ab4cf0d29eec033e11b81] /index.php/ACE_Manifest_Guide?action=pdfbook Error from line 73 of /var/www/wiki/extensions/PdfBook/PdfBook.hooks.php: Call to a member function getNativeData() on null
Backtrace:
#0 /var/www/wiki/includes/Hooks.php(195): PdfBookHooks::onUnknownAction(string, Article)
#1 /var/www/wiki/includes/MediaWiki.php(507): Hooks::run(string, array)
#2 /var/www/wiki/includes/MediaWiki.php(288): MediaWiki->performAction(Article, Title)
#3 /var/www/wiki/includes/MediaWiki.php(745): MediaWiki->performRequest()
#4 /var/www/wiki/includes/MediaWiki.php(519): MediaWiki->main()
#5 /var/www/wiki/index.php(43): MediaWiki->run()
#6 {main}