I have two questions.
1) I'm also geting 13: Permission denied error when I'm starting the Goaccess Container. Looks like NPM did write files to that location.
2)Step 3 do I run script from the Goaccess terminal?
I just noticed that as of 8/25 at about 5am pt SpeedTest started working again. I didn't (or don't remember) make any changes, it just started working. Maybe take another look at yours.