I get "gura mediation" error while open a .ova VM download from CISCO lecture.

Error Log dir
>/xxx/Cybersecurity LabVM Worksation 20230210/VBox.log.1

Error Infomation
>00:00:04.127030 ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={4680b2de-8690-11e9-b83d-5719e53cf1de} aComponent={DisplayWrap} aText={The console is not powered up (setVideoModeHint)}, preserve=false aResultDetail=0

The solution article
>https://forums.virtualbox.org/viewtopic.php?t=108602

The command solve the problem
>VBoxManage setextradata "CybersecurityLabVMWorksation20230210" "VBoxInternal/RamPreAlloc" 1