Trouble Running DigitalSystemsVM on VirtualBox in Ubuntu

I am trying to install and run a virtual machine following this manual. However, I am getting the following error:
Error message: A critical error has occurred while running the virtual machine and the machine execution has been stopped.

The primary issue seems to be:

“Oracle VM VirtualBox Extension Pack (Version: 7.0.18 r162988; VRDE Module: VBoxVRDP unusable because of ‘VBoxExtPackVMRegister returned VERR_VERSION_MISMATCH, pReg=0000000000000000 ErrInfo=’Helper version mismatch – expected 0x50000 got 0x30000”)”

I have added screenshots of the relevant parts of the log:

System Information

ERR MSG: VERR_VERSION_MISMATCH

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