Issue: Issue Installing on Xenforo (Step 1 Failed)

Here is the log I have on the install:

Installing VaultWiki v4.0.20
Step 1

Preparing database
Fatal Error: attempted to instantiate non-existent class vw_Install_DB_Create_attachmentfail_Controller
[path]/vault/install/lib/db/create/attachmentfail/vw.php does not exist or does not contain the specified class.

#0: vw_Hard_Core::fetch_object() in [path]/vault/core/model/vw.php at line 718
#1: vw_Hard_Core::install() in [path]/vault/install/lib/db/create/vw.php at line 52
#2: vw_Install_DB_Create_Controller->__construct() in [path]/vault/install/lib/db/create/xf.php at line 21
#3: vw_Install_DB_Create_Controller_XF->__construct() in [path]/vault/core/model/vw.php at line 406
#4: vw_Hard_Core::fetch_object() in [path]/vault/core/model/vw.php at line 718
#5: vw_Hard_Core::install() in [path]/vault/install/lib/full/steps/vw.php at line 33
#6: vw_Install_Full_Steps_Controller->{closure}() in [path]/vault/core/controller/progress/steps/vw.php at line 83
#7: vw_Progress_Steps_Controller->call() in [path]/vault/core/controller/progress/steps/vw.php at line 53
#8: vw_Progress_Steps_Controller->execute() in [path]/vault/install/lib/full/steps/vw.php at line 244
#9: vw_Install_Full_Steps_Controller->execute() in [path]/vault/core/controller/progress/vw.php at line 92
#10: vw_Progress_Controller->exec_script() in [path]/vault/core/controller/progress/vw.php at line 74
#11: vw_Progress_Controller->execute() in [path]/vault/core/controller/cp/progress/vw.php at line 37
#12: vw_CP_Progress_Controller->process() in [path]/vault/core/controller/cp/install/vw.php at line 313
#13: vw_CP_Install_Controller->install() in [path]/vault/core/controller/cp/install/vw.php at line 61
#14: vw_CP_Install_Controller->execute() in [path]/library/vw/XenForo/ControllerAdmin/Wiki.php at line 118
#15: vw_XenForo_ControllerAdmin_Wiki->actionIndex() in [path]/library/vw/XenForo/ControllerAdmin/Wiki.php at line 175
#16: vw_XenForo_ControllerAdmin_Wiki->actionUpgrade() in [path]/library/vw/XenForo/ControllerAdmin/Wiki.php at line 185
#17: vw_XenForo_ControllerAdmin_Wiki->actionInstall() in [path]/library/XenForo/FrontController.php at line 351
#18: XenForo_FrontController->dispatch() in [path]/library/XenForo/FrontController.php at line 134
#19: XenForo_FrontController->run() in [path]/admin.php at line 13