Issue: ErrorException: Undefined array key "url_x"

ErrorException: Undefined array key "url_x" in src/addons/vw/vw/_core/model/parser/var/vw.php at line 1097

vw\vw\Setup\View->handle_php_error() in src/addons/vw/vw/_core/model/parser/var/vw.php at line 1097
vw_Parser_Var_Model->handle_fullurl() in src/addons/vw/vw/_core/model/parser/handle/base/vw.php at line 272
vw_Parser_Handle_Base_Model->handle_bbcode_var() in src/addons/vw/vw/_core/model/parser/handle/wrapper/vw.php at line 199
vw_Parser_Handle_Wrapper_Model->exec_callback() in src/addons/vw/vw/_core/model/parser/handle/wrapper/vw.php at line 239
vw_Parser_Handle_Wrapper_Model->vwcode_wrapper() in src/XF/BbCode/Renderer/Html.php at line 316
XF\BbCode\Renderer\Html->renderTag() in src/addons/s9e/MediaSites/XF/BbCode/Renderer/Html.php at line 14
s9e\MediaSites\XF\BbCode\Renderer\Html->renderTag() in src/addons/vw/vw/XF/BbCode/Renderer/Html.php at line 523
vw\vw\XF\BbCode\Renderer\Html->renderTag() in src/XF/BbCode/Traverser.php at line 63
XF\BbCode\Traverser->renderSubTree() in src/addons/vw/vw/XF/BbCode/Renderer/Html.php at line 553
vw\vw\XF\BbCode\Renderer\Html->renderSubTree() in src/XF/BbCode/Traverser.php at line 39
XF\BbCode\Traverser->renderAst() in src/addons/vw/vw/XF/BbCode/Renderer/Html.php at line 154
vw\vw\XF\BbCode\Renderer\Html->renderAst() in src/XF/BbCode/Traverser.php at line 22
XF\BbCode\Traverser->render() in src/addons/vw/vw/XF/BbCode/Renderer/Html.php at line 149
vw\vw\XF\BbCode\Renderer\Html->vwParentRender() in src/addons/vw/vw/XF/BbCode/Renderer/Html.php at line 85
vw\vw\XF\BbCode\Renderer\Html->vwRender() in src/addons/vw/vw/_core/instance/parser/renderer/xf2.php at line 385
vw_Parser_Renderer_Instance_XF2->render() in src/addons/vw/vw/_core/model/parser/instance/xf2.php at line 219
vw_Parser_Instance_Model_XF2->parse() in src/addons/vw/vw/_core/controller/dm/page/vw.php at line 1435
vw_DM_Page_Controller->process_links() in src/addons/vw/vw/_core/controller/dm/page/vw.php at line 950
vw_DM_Page_Controller->process_revision() in src/addons/vw/vw/_core/controller/dm/page/vw.php at line 802
vw_DM_Page_Controller->pre_save() in src/addons/vw/vw/XF/Entity/EntityBase.php at line 513
vw\vw\XF\Entity\EntityBase->_preSave() in src/XF/Mvc/Entity/Entity.php at line 1366
XF\Mvc\Entity\Entity->preSave() in src/addons/vw/vw/XF/Entity/EntityBase.php at line 504
vw\vw\XF\Entity\EntityBase->vwPreSave() in src/addons/vw/vw/XF/Entity/EntityBase.php at line 571
vw\vw\XF\Entity\EntityBase->vwSave() in src/addons/vw/vw/_core/controller/dm/xf2.php at line 401
vw_DM_Controller_XF2->save() in src/addons/vw/vw/_install/lib/upgradepath/steps/4/1/6/base/vw.php at line 287
vw_Install_UpgradePath_Steps_416_base_Controller->rebuild_links() in src/addons/vw/vw/_install/lib/upgradepath/steps/4/1/6/base/vw.php at line 192
vw_Install_UpgradePath_Steps_416_base_Controller->{closure}() in src/addons/vw/vw/Setup.php at line 333
vw\vw\Setup->vwRunStep() in src/addons/vw/vw/Setup.php at line 1062
vw\vw\Setup->upgrade() in src/XF/Admin/Controller/AddOn.php at line 597
XF\Admin\Controller\AddOn->actionUpgrade() in src/XF/Mvc/Dispatcher.php at line 352
XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 259
XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 115
XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 57
XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2483
XF\App->run() in src/XF.php at line 524
XF::runApp() in admin.php at line 13