This isn't my specialist area but I'm wondering if you're version of pip is the root cause or something else on the Python side of things. Basically unless you can run
successfully at the Python Console then you won't progress. If I run:
I get '20.1.1' as the output (upgraded today) and when I installed blinker
it still worked without wheel
being installed which make it suspiciously like the installer is not correct on your system hence my suggestion to upgrade pip first. After that then I'm afraid you'll need @Microelly2 or someone with more experience on this install routine.