Have uninstalled and reinstalled Brave, but still can’t install extensions. Not sure what else to try. Might it be my firewall that is blocking a particular port?
When creating a new profile, the Hamburger has the word “Error” to the left, with no indication of how to find out what the error is!
The download is interrupted again!
Just tried downloading a different extension (HTTPS Everywhere) to the one I have been testing with (LastPass) and it installed. Privacy Badger also installed. And they both installed with the original profile. So the problem seems to be with specific extensions.
Have checked LastPass on Chrome and I have the same problem there, so the problem seems to be either with the chrome web store or the LastPass extension.