If you get this error:
“Failed to build gem native extension”
And you’ve installed AnsiCon and initialize it in the startup folder, you will encounter the above error.
The fix is explained here, scroll down to “ERROR: Failed to build gem native extension”
It took me a couple hours over the last few days to figure this out, mainly because that page never came up when I googled for the error, instead, I got a dozen stackoverflow hits. I’ll have to remember to exclude stackoverflow if what I’m finding there is not useful. It seems to be taking over!