Here is a picture of the errors I’m struggling with.

in the first line it says, invalid build path, it doesnt look like the path contains any special characters?
is the output folder empty? (don’t use project root folder at least)
normally its good idea to create Builds/ folder inside your unity project folder
and output there.

Just going to interject that it’s not that simple in WebGL. You’re building onto a web-server. Generally you want to actually separate the web app export from the unity sources.
Pointing a web-server onto your unity sources is looking for trouble.
yes good point, makes it easier to run the build later there.
still if you are just iterating and testing the build,
can use Build & Run (which automatically starts webserver and browser on that location)