QubesOS stuck at boot

I have a similiar problem.

This fellow said he solved his issue:

Someone suggested this issue came up with having two different drives in the laptop.

I know in previous versions of Qubes I had problems with having an OS on both drives, so I blanked the second one, and it allowed it to function. I have thought of opening my laptop and unplugging the drive I am not using now. Anyone have thoughts if that might work?

I have an Alienware 15 R2 which has Qubes on one drive and another OS on the second drive.

Someone suggested that the problem is actually in Python? What is on Line 19.

I am not much help in this, but I thought if I added symptoms someone might find a common factor. ??

Cheers.