Issue: call_user_func_array() expects parameter 1 to be a valid callback

I am getting a mass of these:

ErrorException: call_user_func_array() expects parameter 1 to be a valid callback, class 'vw_Parser_Sideways_Model' does not have a method 'vwIsRendering' - library/vw/XenForo/BbCode/Formatter.php:323
Generated By: Unknown Account, 21 minutes ago
Stack Trace

#0 /library/vw/XenForo/BbCode/Formatter.php(323): XenForo_Application::handlePhpError(2, 'call_user_func_...', '/home/...', 323, Array)
#1 /library/vw/XenForo/BbCode/Parser.php(862): vw_XenForo_BbCode_Formatter->__call('vwIsRendering', Array)
#2 /library/ThemeHouse/DataTables/Extend/XenForo/BbCode/Formatter/Base.php(105): vw_XenForo_BbCode_Parser->render('Symptom ', Array)
#3 /library/XenForo/BbCode/Formatter/Base.php(745): ThemeHouse_DataTables_Extend_XenForo_BbCode_Formatter_Bas e->renderTagTable(Array, Array, Object(WidgetFramework_XenForo_BbCode_Formatter_Base))
#4 /library/vw/XenForo/BbCode/Formatter.php(504): XenForo_BbCode_Formatter_Base->renderValidTag(Array, Array, Array)
#5 /library/XenForo/BbCode/Formatter/Base.php(652): vw_XenForo_BbCode_Formatter->renderValidTag(Array, Array, Array)
#6 /library/vw/XenForo/BbCode/Formatter.php(458): XenForo_BbCode_Formatter_Base->renderTag(Array, Array, 0)
#7 /library/XenForo/BbCode/Formatter/Base.php(565): vw_XenForo_BbCode_Formatter->renderTag(Array, Array, 0)
#8 /library/vw/XenForo/BbCode/Formatter.php(529): XenForo_BbCode_Formatter_Base->renderTreeElement(Array, Array, 0)
#9 /library/vw/XenForo/BbCode/Formatter.php(586): vw_XenForo_BbCode_Formatter->vwPreserveLeadingWhitespaceAndRenderTreeElement(Array, Array, 0)
#10 /library/XenForo/BbCode/Formatter/Base.php(546): vw_XenForo_BbCode_Formatter->renderTreeElement(Array, Array, 0)
#11 /library/XenForo/BbCode/Formatter/Base.php(526): XenForo_BbCode_Formatter_Base->renderSubTree(Array, Array)
#12 /library/vw/XenForo/BbCode/Formatter.php(435): XenForo_BbCode_Formatter_Base->renderTree(Array, Array)
#13 /library/vw/XenForo/BbCode/Parser.php(1088): vw_XenForo_BbCode_Formatter->renderTree(Array, Array)
#14 /library/vw/XenForo/BbCode/Parser.php(817): vw_XenForo_BbCode_Parser->vwParseBbCode('[B]Amphetamine[...')
#15 /vault/core/model/parser/instance/xf.php(161): vw_XenForo_BbCode_Parser->vwInstanceParse('[B]Amphetamine[...')
#16 /vault/core/view/content/page/vw.php(279): vw_Parser_Instance_Model_XF->parse(Array)
#17 /vault/core/view/content/page/vw.php(47): vw_Content_Page_View->process_pagetext(Array, NULL)
#18 /vault/core/view/factory/content/vw.php(91): vw_Content_Page_View->unwrapped(Array, NULL)
#19 /vault/core/view/factory/content/versioned/vw.php(22): vw_Factory_Content_View->get_content(Array, NULL)
#20 /vault/core/view/ui/page/vw.php(52): vw_Factory_Content_Versioned_View->make(Array, NULL)
#21 /vault/core/controller/ui/page/vw.php(925): vw_UI_Page_View->view(Object(vw_UI_Page_Controller_XF))
#22 /vault/core/controller/ui/stack/vw.php(364): vw_UI_Page_Controller->view()
#23 /vault/core/controller/ui/stack/vw.php(291): vw_UI_Stack_Controller->view()
#24 /library/vw/XenForo/ControllerPublic/Wiki.php(70): vw_UI_Stack_Controller->execute()
#25 /library/XenForo/FrontController.php(351): vw_XenForo_ControllerPublic_Wiki->actionIndex()
#26 /library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#27 /index.php(13): XenForo_FrontController->run()
#28 {main}

Request State

array(3) {
["url"] => string(40) "https://forum.com/wiki/xxx"
["_GET"] => array(0) {
}
["_POST"] => array(0) {
}
}