So, to save anyone else the gruesome pain that I went through, make sure that you EMPTY the OUTPUT LOG before you try to package.
I was trying to resolve errors that were irrelevant to the package build. I assumed that each new compilation created a new log (just like what happens when you compile your project). I didn’t realize the main output log was cumulative.
Also, VERY IMPORTANT:
You MUST have Visual Studio 2022 installed on your computer to package MetaHumans and City Sample Crowds. I didn’t see this until I emptied the log out.