Since Virtualbox 6.1, there is support for virtio-scsi as Storage controller.

I can't add a virtio-scsi device with phpvirtualbox. If I do it with the command line, after that the phpvirtualbox machine settings no longer open (Javascript error). It looks like the settings window does not support the new decice type and fails to open.

So please add support for the new decice type in the storage settings.