Guru Meditation Error on Windows 10 VM hosted on Ubuntu 20.04

[lionceau]

Can anyone help me, please? I am struggling to resolve the Guru meditation error on Windows VM running on Ubuntu 20.04.
I am running nested VMs on Windows Host Machine. The host machine has 500GB hard disk, 16GB Ram, and a Core i7 processor.
I have installed Virtualbox on the Windows host and then ubuntu on Virtualbox. inside ubuntu, I have installed another VirtualBox where Windows 10 VM resides.

Details about my system:
Ubuntu VM:

processors: 2
Ram: 5000MB
hard disk: 230GB

Windows VM:
processor:1
Ram: 2000MB
hard disk: 50GB

However, each time I try to run the Windows 10 VM, I got a Guru meditation error

[mpack]

Please provide a VM log file. Make sure the VM is fully shut down, then right click it in the manager UI. Select "Show Log" and save "VBox.log" (no other file) to a zip file. Attach the zip here.

[lionceau]

Thanks @ mpack, here I am providing the log file.

[scottgus1]

That's the older vbox.log.2, not the most recent vbox.log. It is also incomplete somehow, the reason for the guru meditation is not shown.

Two problems I see:

The Extension Pack is old. Extension Pack version must match the Virtualbox version.

3D acceleration is on, but video RAM is only 16MB. Max out the video RAM slider.

Fix these two things, then provide the most recent "vbox.log" again if issues continue. Make sure the VM window and any error windows are fully closed before copying the log.