I'm running an Enterprise update 12 -> 15 command-line and it keeps failing on the following error.

I've googled around, and I can't find any information on this type of error.

I've already uninstalled all third party themes and modules. I'm stuck. What does this mean and how do I fix it?

**For whatever reason, every time I paste the error into this window, it jumbles up the order of the words.  I don't know why this is happening so here's a screenshot of the error:

Screenshot: https://pasteboard.co/icviW96KevL4.png