Issue: Invalid argument supplied for foreach()

https://www.vaultwiki.org/xf-wiki/in...i/#do-comments
The following error occurred:
Invalid argument supplied for foreach()

XenForo_Application::handlePhpError() in /home/vw/edge/upload/vault/core/view/factory/comment/xf.php at line 331
vw_Factory_Comment_View_XF->parse_bbcode() in /home/vw/edge/upload/vault/core/view/factory/comment/vw.php at line 170
vw_Factory_Comment_View->commentbit() in /home/vw/edge/upload/vault/core/view/ui/comment/xf.php at line 154
vw_UI_Comment_View_XF->ajax_reply() in /home/vw/edge/upload/vault/core/controller/ui/discussion/vw.php at line 429
vw_UI_Discussion_Controller->postcomment() in /home/vw/edge/upload/vault/core/controller/ui/discussion/vw.php at line 103
vw_UI_Discussion_Controller->execute() in /home/vw/edge/upload/vault/core/controller/ui/discussion/xf.php at line 67
vw_UI_Discussion_Controller_XF->execute() in /home/vw/edge/upload/vault/core/view/ui/page/vw.php at line 273
vw_UI_Page_View->get_comments() in /home/vw/edge/upload/vault/core/controller/ui/page/vw.php at line 750
vw_UI_Page_Controller->comments() in /home/vw/edge/upload/vault/core/controller/ui/page/vw.php at line 170
vw_UI_Page_Controller->execute() in /home/vw/edge/upload/vault/core/controller/ui/page/xf.php at line 53
vw_UI_Page_Controller_XF->execute() in /home/vw/edge/upload/vault/core/controller/ui/stack/vw.php at line 231
vw_UI_Stack_Controller->execute() in /home/vw/edge/upload/library/vw/XenForo/ControllerPublic/Wiki.php at line 63
vw_XenForo_ControllerPublic_Wiki->actionIndex() in XenForo/FrontController.php at line 351
XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
XenForo_FrontController->run() in /home/vw/public_html/xf/index.php at line 13